CN117823917A - Waste treatment system - Google Patents

Abstract

The invention discloses a waste treatment system, which comprises an oil sludge conveying device, a crushing and mixing device, a spraying device and an incineration device. The crushing and mixing device comprises a crushing and mixing assembly and a detection and control assembly, wherein the crushing and mixing assembly is used for crushing the entering solid waste and mixing the crushed solid waste with the oil sludge, and the detection and control assembly is used for detecting and controlling the mixing proportion of the solid waste and the oil sludge. The spraying device comprises a main sludge spraying gun which is communicated with the mixer. The incineration device comprises a rotary kiln and a combustor, wherein the rotary kiln is provided with a feed inlet, an outlet of the main sludge spray gun extends into the rotary kiln from the feed inlet, and the combustor is arranged in the rotary kiln.

Description

Waste treatment system

Technical Field

The invention relates to the technical field of sludge environmental protection treatment, in particular to a waste treatment system.

Background

Various industrial wastes are generated in industrial production, and in order to avoid the influence of the industrial wastes on the environment, it is necessary to treat the industrial wastes effectively.

Sludge is one of the waste products, which is the product of municipal sewage plants and industrial sewage treatment stations. The sludge has the characteristics of high water content, large volume, complex form, difficult transportation and the like due to the fact that the sludge contains a large amount of organic matters, heavy metals, pathogenic bacteria and the like, and the sludge is discharged at will without treatment, so that the environment is seriously polluted.

Oily sludge is also a waste, consisting mainly of crude oil, water and earth, with an oil content typically between 10% and 50%. The oil sludge contains a large amount of toxic substances such as benzene series, phenols, anthracene, pyrene and the like, and has malodor. At the same time, these substances are also an integral part of the crude oil. The oil sludge is not only waste generated in the oilfield production process, but also a resource. If the waste water is not reasonably treated, the waste water not only pollutes the environment, but also causes the waste of resources.

Besides sludge and fatlute, the waste disposal by incineration may contain many other solid wastes, and the feeding modes are greatly different due to the difference of materials and packaging forms. For example, the feeding modes of different forms of wastes such as ton bags, ton drums, small packages, bulk and the like are different.

However, the current feeding and incineration systems have the following problems:

1. the existing feeding and incineration system can only treat wet sludge, but cannot treat oil sludge or wet sludge needing to be dehydrated and other wastes at the same time, so that the feeding mode and the treatment mode of the existing feeding and incineration system are single, and the applicability is poor.

2. The annual operation time of the wet sludge drying system in the existing feeding and incineration system is different from that of the incineration system, so that the dried wet sludge is not stored in a reasonable position when the incineration system stops operating.

3. When the oil sludge is incinerated, the oil sludge is mostly directly sprayed into the rotary kiln for incineration, but the oil sludge is difficult to burn and insufficient to burn due to higher humidity, so that more fuel is needed for auxiliary incineration, and the incineration cost of the oil sludge is increased.

4. When solid waste is burned, the broken solid waste is sprayed into the rotary kiln for burning through the oil sludge spray gun after being broken by the breaker, but the broken solid waste has poor fluidity due to lower humidity, so that the oil sludge spray gun is easy to be blocked and is broken when sprayed into the rotary kiln through the oil sludge spray gun, and the operation efficiency is reduced and the operation cost is increased by replacing or maintaining the oil sludge spray gun at the moment.

5. The waste gas generated in the existing sludge drying process needs to be treated independently, so that the labor cost is increased, and the operation cost of treating the waste gas independently is also increased.

Disclosure of Invention

The invention has the advantages that the waste treatment system is provided, wherein the crushing and mixing device, the spraying device and the wet sludge treatment module are arranged, sludge with different components and solid waste in different packaging forms can be pretreated and conveyed to the incineration device for incineration, so that the sludge and solid waste treatment method is various in modes and can be widely applied to practical occasions.

An advantage of the present invention is to provide a waste treatment system, wherein the detection control assembly is configured to enable the controller to adjust the amount of solid waste entering the mixer by transmitting a control signal to the first control valve according to the detection result of the first detector, so that the humidity of the sludge burned by the rotary kiln is in a reasonable range, the cost of burning the mixed wet sludge is controlled in a reasonable range, and the economy of burning the wet sludge is improved.

Another advantage of the present invention is that it provides a waste treatment system, wherein the first elevator and the second elevator are configured to transport and feed dangerous waste packaged by bulk dangerous waste, small package dangerous waste, ton bags, ton barrels, etc., so as to further pretreat sludge with different components and solid waste with different package forms, and convey the pretreated sludge to the incineration module for incineration.

Another advantage of the present invention is to provide a waste treatment system, wherein the crusher is combined with the mixer, and the crushed solid waste is mixed with the sludge with higher humidity, so that the problem of poor fluidity of the solid waste due to lower humidity can be solved, thereby avoiding the situation that the main sludge spray gun is blocked due to poor fluidity of the crushed solid waste, further reducing the frequency of maintaining and replacing the main sludge spray gun, and reducing the humidity of the sludge, and thus, when the mixed sludge and solid waste are incinerated, more fuel is not needed for auxiliary combustion, thereby greatly reducing the operation cost.

The invention further has the advantages that the waste treatment system is provided, the sludge with higher moisture content can be dried firstly through the drying and cooling device, and then the dried sludge is cooled, so that the temperature of the dried sludge is reduced, and the dried sludge can smoothly enter the dry sludge storage bin for storage.

The waste treatment system has the advantages that the waste treatment system is provided, the washing tower can wash, cool and remove dust on waste gas generated in the drying process, and the waste gas discharged from the washing tower is conveyed to the two combustion chambers of the incineration system through the induced draft fan to be incinerated, so that the pollution to the atmosphere environment is reduced.

The invention further provides a waste treatment system, wherein the standby oil sludge spray gun is arranged, so that when the incineration system needs to be overhauled, the sludge in the oil sludge storage bin can be directly sprayed into the rotary kiln through the standby oil sludge spray gun through the feeding port, and the sludge in the oil sludge storage bin is prevented from being accumulated when the incineration system is overhauled.

Another advantage of the present invention is to provide a waste treatment system, wherein the storage pit can firstly screw dry sludge in the dry sludge storage bin into the storage pit when the incineration system is in shutdown or not in full load operation, and then the dry sludge in the storage pit is conveyed to the chain plate conveyor by matching with the grabbing component when the subsequent incineration system needs to feed, and the above process is used for incineration, so that the dry sludge conveyed from the dry sludge storage bin is prevented from being randomly piled up when the incineration line is in shutdown or not in full load operation.

To achieve at least one of the above advantages, the present invention provides a waste treatment system comprising:

a sludge conveying device;

the crushing and mixing device comprises a crushing and mixing assembly and a detection and control assembly, wherein the crushing and mixing assembly is used for crushing the entering solid waste and mixing the crushed solid waste with the oil sludge, and the detection and control assembly is used for detecting and controlling the mixing proportion of the solid waste and the oil sludge;

the spraying device comprises a main sludge spray gun which is communicated with the mixer;

the device comprises a rotary kiln and a combustor, wherein the rotary kiln is provided with a feed inlet, an outlet of the main sludge spray gun extends into the rotary kiln from the feed inlet, and the combustor is arranged in the rotary kiln.

According to an embodiment of the invention, the sludge conveying device comprises a sludge storage bin and a conveying pipeline.

According to an embodiment of the invention, the crushing and mixing assembly comprises a crusher, a mixer, at least one main pushing arm and at least one first control valve, wherein the crusher is communicated with the mixer, the conveying pipeline is communicated with the mixer, and the main pushing arm and the first control valve are arranged on the crusher.

According to an embodiment of the present invention, the detection control assembly includes a first detector, a second detector and a controller, the first detector and the second detector are respectively electrically connected to the controller, the second detector is configured as a humidity sensor, the first detector is configured as an organic matter detector, the first control valve and/or the second control valve is connected to the controller, the first detector is disposed in the rotary kiln, and the second detector is disposed in the mixer.

According to an embodiment of the invention, the waste treatment system further comprises a wet sludge treatment module, wherein the wet sludge treatment module comprises a dehydration storage device, a drying and cooling device and a feeding storage device, the dehydration storage device is used for dehydrating and storing wet sludge, the drying and cooling device is used for drying and cooling the wet sludge, and the feeding storage device is used for conveying the dried and cooled sludge to the rotary kiln and storing the sludge which is not conveyed.

According to an embodiment of the invention, the dewatering and storing device comprises a wet sludge storage bin, a dewatered sludge receiving bin, a wet sludge receiving bin and a centrifugal dehydrator, wherein the dewatered sludge receiving bin and the wet sludge receiving bin are respectively connected with the wet sludge storage bin, and the centrifugal dehydrator is connected with the dewatered sludge receiving bin.

According to one embodiment of the invention, the drying and cooling device comprises a sludge drying machine, a thousand sludge spiral cooler and a dry sludge storage bin, wherein the sludge drying machine is communicated with the wet sludge storage bin, the dry sludge spiral cooler is communicated with the sludge drying machine, and the dry sludge storage bin is communicated with the dry sludge spiral cooler.

According to one embodiment of the invention, the drying and cooling device further comprises a washing tower, and the washing tower is communicated with the sludge dryer through a pipeline.

According to an embodiment of the invention, the feeding and storing device comprises a material conveying assembly and a material pushing assembly, and the material conveying assembly is used for conveying dried and cooled sludge to the material pushing assembly.

According to an embodiment of the present invention, the wet sludge treatment module further comprises a storage pit for storing solid waste not directly burned in the dry sludge storage bin, and a grabbing component for transferring the solid waste stored in the storage pit.

Drawings

FIG. 1 is a diagram of a feed incineration system according to the present invention.

Fig. 2 is an enlarged view of a of fig. 1 according to the present invention.

Fig. 3 is an enlarged view of B of fig. 1 in accordance with the present invention.

10. A sludge conveying device;

11. an oil sludge storage bin;

12. a delivery line;

20. a crushing and mixing device;

21. crushing the mixing assembly;

211. a crusher; 21101. a first feed port; 21102. a first discharge port;

212. a mixer; 21201. a main feed inlet; 21202. a secondary feed port; 21203. a main discharge port; 213. a main pushing arm;

214. a first control valve;

215. connecting the soft sleeve;

216. a first elevator; 21601. a second feed inlet; 21602. a second discharge port;

22. detecting a control component;

221. a first detector;

222. a second detector;

223. a controller;

30. a spraying device;

31. a main sludge spray gun;

32. a spare oil sludge spray gun;

40. an incineration device;

41. a rotary kiln;

4101. a feed inlet;

50. a wet sludge treatment module;

51. a dehydration storage device;

511. a wet sludge storage bin;

512. a dehydrated sludge receiving bin;

513. a wet sludge receiving bin;

514. a centrifugal dehydrator;

52. a drying and cooling device;

521. a sludge drier;

522. a dry sludge screw cooler;

523. a dry sludge storage bin;

524. a washing tower;

53. a feeding storage device;

531. a material conveying assembly;

5311. a second elevator;

531101, a third feed inlet; 531102, a third discharge port;

5312. a link plate conveyor;

53121. an inlet end; 53122. an outlet end.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

A waste treatment system according to a preferred embodiment of the present invention, which is capable of treating at least two different wastes, such as oil sludge and wet sludge and/or solid waste, by incineration, will be described in detail below with reference to fig. 1 to 3.

Specifically, the waste treatment system includes a sludge conveying apparatus 10, a crushing and mixing apparatus 20, a spraying apparatus 30, and an incineration apparatus 40.

The sludge conveying device 10 is communicated with the crushing and mixing device 20, and the spraying device 30 is communicated with the incineration device 40. Preferably, the sludge transfer device 10 is also in communication with the injection device 30 via a branch.

Specifically, the crushing and mixing device 20 includes a crushing and mixing assembly 21 and a detection and control assembly 22. The crushing and mixing assembly 21 is used for crushing the incoming solid waste and mixing the crushed solid waste with the sludge. The detection control component 22 is used for detecting and controlling the mixing proportion of the solid waste and the oil sludge.

Specifically, the crushing and mixing assembly 21 includes a crusher 211 and a mixer 212, the crusher 211 communicates with the mixer 212, and the sludge conveying device 10 communicates with the mixer 212.

Specifically, the spraying device 30 includes a main sludge spray gun 31. Preferably, the spraying device 30 further comprises a spare sludge spray gun 32. The main sludge spray gun 31 is communicated with the mixer 212, and the standby sludge spray gun 32 is communicated with the sludge conveying device 10.

It will be appreciated by those skilled in the art that by breaking the solid waste after breaking by the breaker 211, the solid waste enters the mixer 212 and is then mixed with the oil sludge having a relatively high humidity entering the mixer 212, it is possible to avoid the occurrence of blockage of the main sludge spray gun 31 due to poor fluidity of the solid waste, thereby reducing the frequency of replacing and maintaining the main sludge spray gun 31, further reducing the operation cost, improving the operation efficiency, and reducing the humidity of the sludge by mixing the mixer 212, so that when the sludge is incinerated, the amount of fuel for auxiliary combustion is reduced due to the reduction of the humidity of the sludge, further reducing the energy consumption and the operation cost.

Specifically, the incinerator 40 includes a rotary kiln 41 and a burner, the rotary kiln 41 has a feed inlet 4101, and the outlets of the main sludge spray gun 31 and the spare sludge spray gun 32 extend into the rotary kiln 41 from the feed inlet 4101. The burner is provided to the rotary kiln 41, and ignites the sludge mixed by the mixer 212 and the crushed solid wastes introduced into the rotary kiln 41.

Preferably, the sludge transfer apparatus 10 includes a sludge storage bin 11 and a transfer line 12. The sludge storage bin 11 is provided on a conveying path of the conveying pipe 12.

Specifically, the crusher 211 has a first inlet 21101 and a first outlet 21102, both communicating with the inner chamber of the crusher 211, and the mixer 212 has a main inlet 21201, a secondary inlet 21202 and a main outlet 21203, both communicating with the inner chamber of the mixer 212. The main inlet 21201 communicates with the first outlet 21102 of the crusher 211, and the auxiliary inlet 21202 communicates with the conveying line 12, so that the crushed solid waste enters the inner cavity of the mixer 212 and is mixed with the sludge entering the inner cavity of the mixer 212 from the auxiliary inlet 21202. The main discharge port 21203 communicates with the feed port 4101 of the rotary kiln 41, and the solid waste and oil sludge mixed in the mixer 212 enter the feed port 4101 through the main discharge port 21203, and finally are sprayed into the rotary kiln 41 through the main sludge spray gun 31, and are burned by the burner in the rotary kiln 41.

It should be noted that a rotary pushing screw blade is disposed in the mixer 212, and when the rotary pushing screw blade is driven to rotate, waste entering the inner cavity of the mixer 212 can be pushed to the main discharge port 21203.

It will be appreciated by those skilled in the art that the solid packaging waste is crushed in the crusher 211, and after crushing, the solid packaging waste is formed into a particle size of preferably 200mm or less, and then enters the mixer 212.

Specifically, the crushing and mixing assembly 21 further includes at least one main pushing arm 213, and the main pushing arm 213 is disposed at the first feeding port 21101. As will be appreciated by those skilled in the art, the main pushing arm 213 is configured to press the solid waste located in the first feed port 21101, so as to increase the contact degree of the solid waste with the crushing device in the crusher 211 when the solid waste is crushed by the crusher 211, thereby improving the crushing effect of the crusher 211 on the solid waste.

More specifically, the break-even assembly 21 further comprises at least one first control valve 214. The first control valve 214 is disposed between a main feed port 21201 of the mixer 212 and the first discharge port 21102 of the crusher 211.

It will be appreciated by those skilled in the art that by controlling the opening degree of the first control valve 214, the amount of the crushed solid waste falling into the mixer 212 can be controlled, and thus the mixing ratio of the crushed solid waste and the wet sludge can be controlled, and finally the crushed solid waste and the wet sludge can be sprayed into the feed inlet 4101 through the main sludge spray gun 31, and the burning in the rotary kiln 41 can be completed through the burner.

Preferably, the secondary feed port 21202 is further provided with a second control valve. It will be appreciated by those skilled in the art that by controlling the second control valve, the amount of sludge introduced into the mixer 212 via the secondary feed port 21202 can be controlled, and thus the mixing ratio of solid waste to wet sludge can also be controlled.

Preferably, the crushing and mixing assembly 21 further comprises a connecting soft sleeve 215, and the first control valve 214 is connected with the first discharge port 21102 of the crusher 211 through the connecting soft sleeve 215, so as to control the amount of solid waste entering the mixer 212 through the crusher 211.

It will be appreciated by those skilled in the art that the soft connecting sleeve 215 may ensure that the crushed solid waste can completely enter the main feed port 21201 of the mixer 212 without scattering and leakage when the position of the first discharge port 21102 and the main feed port deviate due to vibration of the crusher 211.

Specifically, the detection control assembly 22 includes a first detector 221, a second detector 222, and a controller 223, where the first detector 221 and the second detector 222 are electrically connected to the controller 223, respectively.

In one embodiment, the second detector 222 is configured as a humidity sensor and the first detector 221 is configured as an organic detector. The first control valve 214 and/or the second control valve are/is connected to the controller 223, the first detector 221 is provided in the rotary kiln 41, and the second detector 222 is provided in the mixer 212.

It will be appreciated by those skilled in the art that the first detector 221 detects the result of the full extent of the burnt mixed sludge in the rotary kiln 41, and transmits the detection result to the controller 223, the second detector 222 detects the humidity of the mixed sludge entering the mixer 212, and transmits the detection result to the controller 223, the controller 223 analyzes the detection result fed back by the first detector 221, and if the feedback detection result shows that the burnt sludge humidity is still large, the controller 223 sends a control signal to the first control valve 214 and increases the opening degree of the first control valve 214 and/or the second control valve, thereby adjusting the amount of solid waste discharged into the mixer 212, so as to automatically adjust the proportion of the mixed sludge and solid waste, so that the mixed sludge and solid waste can be burnt more fully. It is worth mentioning that, because the oil sludge contains combustion-supporting organic matters, the organic matters in the oil sludge can be more helpful for the combustion of the solid wastes. Thus, the use of the combustion improver can be reduced, and the energy-saving effect is achieved.

Specifically, the crushing and mixing assembly 21 further includes a first elevator 216, the first elevator 216 having a second inlet 21601 and a second outlet 21602, the second outlet 21602 being in communication with the first inlet 21101. That is, the solid packaging waste to be crushed can enter the first elevator 216 through the second feeding opening 21601 of the first elevator 216, and enter the first feeding opening 21101 of the crusher 211 from the second discharging opening 21602 of the first elevator 216, thereby crushing the solid packaging waste to be crushed.

Specifically, the waste treatment system further comprises a wet sludge treatment module 50, wherein the wet sludge treatment module 50 comprises a dewatering storage device 51, a drying and cooling device 52 and a feeding storage device 53. The dewatering and storing device 51 is used for dewatering and storing wet sludge, the drying and cooling device 52 is used for drying and cooling the wet sludge, and the feeding and storing device 53 is used for conveying the dried and cooled sludge to the rotary kiln 41 and storing sludge which is not conveyed.

Specifically, the dewatering storage device 51 includes a wet sludge storage bin 511, a dewatered sludge receiving bin 512, a wet sludge receiving bin 513, and a centrifugal dehydrator 514. The dewatered sludge receiving bin 512 and the wet sludge receiving bin 513 are connected to the wet sludge storage bin 511, respectively, and the centrifugal dehydrator 514 is connected to the dewatered sludge receiving bin 512.

As will be appreciated by those skilled in the art, the external wet sludge is pumped into the wet sludge receiving bin 513 by the sludge lifting pump, and the sludge to be dewatered is pumped into the centrifugal dehydrator 514 by the sludge lifting pump to be dewatered, the dewatered sludge is conveyed into the dewatered sludge receiving bin 512, and finally, the wet sludge receiving bin 513 and the sludge in the dewatered sludge receiving bin 512 are pumped into the wet sludge storage bin 511 by the screw pump.

Specifically, the drying and cooling device 52 includes a sludge dryer 521, a thousand sludge screw cooler 522, and a dry sludge storage bin 523. The sludge drier 521 is communicated with the wet sludge storage bin 511, the dry sludge screw cooler 522 is communicated with the sludge drier 521, and the dry sludge storage bin 523 is communicated with the dry sludge screw cooler 522. That is, the wet sludge storage bin 511 is pumped into the sludge drier 521 by a screw pump to dry the dry sludge to a water content of about 30-40%, but the dried sludge is required to be transferred to the dry sludge screw cooler 522 due to a higher temperature of the dried sludge, and the temperature of the dried sludge is reduced by heat exchange with circulating cooling water to finally enter the dry sludge storage bin 523, so that the dry sludge is stored.

Specifically, the drying and cooling device 52 further includes a scrubber 524, and the scrubber 524 is in pipeline communication with the sludge dryer 521. As will be appreciated by those skilled in the art, the sludge dryer 521 may generate waste gas when drying wet sludge, and the waste gas is conveyed to the scrubber 524 through a pipeline for washing, cooling and dedusting, and the waste gas discharged from the scrubber 524 is conveyed to the two combustion chambers of the incineration line through an induced draft fan for incineration, so as to reduce pollution to the atmospheric environment.

Specifically, the feeding and storing device 53 includes a feeding component 531 and a pushing component 532. The material transferring component 531 is configured to transfer the dried and cooled sludge to the pushing component 532.

Specifically, the material transferring assembly 531 includes a second lifter 5311 and a scraper conveyor 5312, the second lifter 5311 has a third inlet 531101 and a third outlet 531102, the scraper conveyor 5312 has an inlet end 53121 and an outlet end 53122, and the dry sludge storage bin 523 is in communication with the inlet end 53121.

Specifically, the pushing assembly 532 includes a hopper 5321, a second control member 5322, and a pushing member 5323, the pushing member 5323 being in communication with the hopper 5321.

Specifically, the hopper 5321 has a fourth inlet 532101 and a fourth outlet 532102, the second control member 5322 is disposed at the fourth outlet 532102, and the third outlet 531102 and the outlet 53122 are aligned with the fourth inlet 532101.

Specifically, the second control means 5322 comprises an upper control valve 53221 and a lower control valve 53222, wherein a distance is provided between the upper control valve 53221 and the lower control valve 53222. The second control member 5322 is configured to block the fourth outlet 532102 of the hopper 5321.

Specifically, the pushing member 5323 includes a pushing frame 53231 and a secondary pusher 53232, the secondary pusher 53232 is disposed in the pushing frame 53231, the pushing frame 53231 has a fifth inlet 5323101 and a fifth inlet 5323102, the fifth inlet 5323101 communicates with the fourth outlet 532102, and the fifth inlet 5323102 is aligned with the inlet 4101.

As will be appreciated by those skilled in the art, small packages of solid waste are transferred into the hopper 5321 by the second elevator 5311, while the dry sludge of the dry sludge storage bin 523 is screw conveyed to the inlet end 53121 of the chain scraper conveyor 5312. When solid waste enters the hopper 5321, the upper control valve 53221 and the lower control valve 53222 are both in a state of blocking the fourth discharge port 532102, at this time, the solid waste entering the hopper 5321 falls on the upper surface of the upper control valve 53221, when the solid waste is conveyed downwards, the upper control valve 53221 is opened and does not block the fourth discharge port 532102, so that the solid waste in the hopper 5321 slides downwards to the upper surface of the lower control valve 53222, when the solid waste on the surface of the lower control valve 53222 reaches a certain capacity, the upper control valve 53221 is firstly closed and blocks the fourth discharge port 532102, the solid waste also continuously falls on the upper surface of the upper control valve 53221, at this time, the lower control valve 53222 is opened again and does not longer have the fourth discharge port 532102, at this time, the solid waste on the surface of the lower control valve 53222 slides downwards to the pusher 53231 due to gravity and is located on the side of the auxiliary pusher 3726, and then falls on the side of the auxiliary pusher 3728 to the side of the auxiliary pusher 3728, and finally the waste is pushed out of the fifth pusher 3728.

When the auxiliary pusher 53232 pushes the solid waste, the lower control valve 53222 is also closed again and seals the fourth discharge port 532102, and in the process that the auxiliary pusher 53232 returns to the initial position, the upper control valve 53221 is opened again and does not seal the fourth discharge port 532102 any more, the solid waste on the surface of the upper control valve 53221 continues to fall on the surface of the lower control valve 53222, and the above process is repeated, so that the solid waste in the hopper 5321 is pushed into the rotary kiln 41 repeatedly. That is, the solid waste is prevented from falling to the left side of the auxiliary pusher 53232 by alternately opening and closing the upper control valve 53221 and the lower control valve 53222, so that the fault of the pusher 532 is prevented, and the incineration efficiency is improved.

Specifically, the wet sludge treatment module 50 further includes a storage pit 54 and a grasping assembly 55. The storage pit 54 is used for storing solid wastes which are not directly burned in the dry sludge storage bin 523. The grabbing assembly 55 is used for conveying the solid waste stored in the storage pit 54 onto the chain scraper conveyor 5312 and finally into the hopper 5321. It will be appreciated by those skilled in the art that the dry sludge in the dry sludge storage bin 523 may be first transported into the storage pit 54 by screw when the incineration line is in off-line or not at full load, and then transported to the chain conveyor 5312 by the grabbing assembly 55 when the subsequent incineration line needs to be fed, and incinerated in the above-mentioned process.

Preferably, the gripping assembly 55 includes a bridge crane 551 and a hydraulic grapple 552. That is, the solid wastes stored in the pit 54 are transferred to the scraper conveyor 5312 by the cooperation of the bridge crane 551 and the hydraulic grab 552.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims (10)

1. A waste treatment system, comprising:

a sludge conveying device;

the crushing and mixing device comprises a crushing and mixing assembly and a detection and control assembly, wherein the crushing and mixing assembly is used for crushing the entering solid waste and mixing the crushed solid waste with the oil sludge, and the detection and control assembly is used for detecting and controlling the mixing proportion of the solid waste and the oil sludge;

the spraying device comprises a main sludge spray gun which is communicated with the mixer;

the device comprises a rotary kiln and a combustor, wherein the rotary kiln is provided with a feed inlet, an outlet of the main sludge spray gun extends into the rotary kiln from the feed inlet, and the combustor is arranged in the rotary kiln.

2. The waste treatment system of claim 1, wherein the sludge transfer device comprises a sludge storage bin and a transfer line.

3. The waste treatment system of claim 1, wherein the crushing and mixing assembly comprises a crusher, a mixer, at least one main pusher arm and at least one first control valve, the crusher being in communication with the mixer, the delivery line being in communication with the mixer, the main pusher arm and the first control valve both being disposed on the crusher.

4. The waste treatment system of claim 1, wherein the detection control assembly comprises a first detector, a second detector and a controller, the first detector and the second detector are respectively electrically connected with the controller, the second detector is configured as a humidity sensor, the first detector is configured as an organic matter detector, the first control valve and/or the second control valve is connected with the controller, the first detector is disposed in the rotary kiln, and the second detector is disposed in the mixer.

5. The waste treatment system of claim 1, further comprising a wet sludge treatment module, the wet sludge treatment module comprising a dewatering storage device for dewatering and storing wet sludge, a drying and cooling device for drying and cooling wet sludge, and a feed storage device for transporting dried and cooled sludge to the rotary kiln and storing sludge that is not transported.

6. The waste treatment system of claim 5, wherein the dewatering storage device comprises a wet sludge storage bin, a dewatered sludge receiving bin, a wet sludge receiving bin, and a centrifugal dehydrator, the dewatered sludge receiving bin and the wet sludge receiving bin being respectively connected to the wet sludge storage bin, the centrifugal dehydrator being connected to the dewatered sludge receiving bin.

7. The waste treatment system of claim 5, wherein the desiccation cooling device includes a sludge desiccator, a dry sludge screw cooler, and a dry sludge storage bin, the sludge desiccator in communication with the wet sludge storage bin, the dry sludge screw cooler in communication with the sludge desiccator, and the dry sludge storage bin in communication with the dry sludge screw cooler.

8. The waste treatment system of claim 5, wherein the desiccation cooling device further comprises a scrubber in line communication with the sludge desiccator.

9. The waste treatment system of claim 5, wherein the feed storage device includes a transfer assembly and a pushing assembly, the transfer assembly being configured to transfer dried and cooled sludge to the pushing assembly.

10. The waste treatment system of claim 5, wherein the wet sludge treatment module further comprises a pit for storing solid waste not directly incinerated within the dry sludge storage bin and a grasping assembly for transferring solid waste stored within the pit.