A sludge drying coordinated treatment system

Abstract

The utility model belongs to the technical field of sludge treatment, and specifically relates to a sludge drying coordinated treatment system. The sludge drying coordinated treatment system of the utility model comprises a sludge receiving device, a sludge filter pressing device, a sludge granulation drying device, a sludge final drying device and a garbage incinerator which are connected in sequence; the sludge can be initially filtered and dried by the sludge filter pressing device, and then granulated by the sludge granulation drying device, and after the granules are finally dried by the sludge final drying device, they are entered into the garbage incinerator as dried sludge for coordinated incineration with domestic garbage; the sustainable and high-efficiency effect of low sludge treatment cost, high proportion of coordinated incineration, and no negative effect on incineration can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, and in particular relates to a sludge drying coordinated treatment system. Background Art

[0002] Sludge resource utilization can generate economic benefits by using the heat of organic matter in sludge to generate electricity; sludge contains a large number of harmful components and must be treated harmlessly before returning to the environment. The coordinated disposal of municipal sludge and industrial sludge in domestic waste power plants is just in its infancy. At present, the treatment process of sludge coordinated by waste incinerators is difficult to achieve large-scale co-combustion. The main reasons are high treatment costs and low co-combustion ratios. At the same time, it is easy to cause a series of problems such as large fly ash, coking in the furnace, low burnout rate, affecting boiler load, and reducing boiler efficiency.

[0003] Sludge incineration produces ash, which can be used together with domestic waste slag to make bricks, pave roads, etc. However, after incineration of 80% moisture content sludge (wet sludge), only 0.1 tons of ash are produced per ton, and the reduction is 90%. In addition, due to the low calorific value of wet sludge, general waste incineration power plants can only burn a small amount of wet sludge. Therefore, it is necessary to develop a sludge drying and coordinated processing system. Utility Model Content

[0004] The utility model aims to provide a sludge drying coordinated treatment system to solve the technical problem of low wet sludge treatment efficiency of the existing garbage incinerator system.

[0005] In order to solve the above technical problems, the utility model provides a sludge drying coordinated treatment system, comprising: a sludge receiving device, a sludge filter press device, a sludge granulation and drying device, a sludge final drying device and a garbage incinerator connected in sequence;

[0006] The sludge receiving device is used to receive sludge;

[0007] The sludge filter press device is used to perform preliminary filter pressing and drying on the sludge;

[0008] The sludge granulation and drying device is used to granulate the sludge after preliminary filter pressing and drying;

[0009] The sludge final drying device is used to final dry the particles;

[0010] The waste incinerator is used for the coordinated incineration of dried particles and domestic waste.

[0011] In one embodiment of the present application, the sludge receiving device comprises:

[0012] A hopper, with a feed inlet at the top and a discharge channel at one side of the bottom;

[0013] A pushing mechanism, arranged at the bottom of the hopper, is used to push the sludge into the discharge channel;

[0014] The sludge pumping pipe is connected to the outlet of the discharge channel and is used to transport the sludge to the sludge filter press device.

[0015] In one embodiment of the present application, a gate valve is provided at the inlet of the discharge channel;

[0016] A stirring screw is arranged in the discharge channel;

[0017] The discharge channel is located above the stirring screw and is provided with a drug adding port.

[0018] In one embodiment of the present application, a hydraulic door is provided on the feed port;

[0019] A grid is arranged in the feed port.

[0020] In one embodiment of the present application, a material level meter is also provided on the hopper.

[0021] In one embodiment of the present application, the sludge filter press device comprises: a cloth device, a filter press device, a filter cloth retracting device and a sludge conveying device; wherein

[0022] The distribution device evenly spreads the sludge between the multiple layers of filter cloth;

[0023] The filter press device is used to filter the filter cloth;

[0024] The filter cloth taking-up and releasing device is used to recover the filter cloth after filter pressing;

[0025] The sludge conveying device is used to collect the mud cake dropped from the filter cloth and convey it to the sludge granulation and drying device.

[0026] In one embodiment of the present application, the sludge granulation device is a roller granulator, the upper part of which is provided with a material temporary storage bin for receiving the sludge after filtration, and a roller assembly is arranged inside, and its outlet is connected to the sludge final drying device.

[0027] In one embodiment of the present application, the sludge final drying device is a disc dryer or a belt dryer.

[0028] In one embodiment of the present application, the sludge drying coordinated treatment system further includes a waste gas collection system; the waste gas collection system includes:

[0029] Exhaust fan;

[0030] An exhaust gas collection pipe, one end of which is connected to the air inlet of the exhaust gas fan, and the other end is connected to the air suction port of the sludge bin, the air suction port of the filter press, and the air suction port of the granulation and drying;

[0031] A first discharge pipe, used to connect the exhaust gas fan outlet and the emergency treatment equipment;

[0032] The second discharge pipe is used to connect the air outlet of the exhaust fan and the garbage bin.

[0033] The beneficial effect of the utility model is that the sludge drying coordinated treatment system of the utility model comprises a sludge receiving device, a sludge filter pressing device, a sludge granulation and drying device, a sludge final drying device and a garbage incinerator which are connected in sequence; the sludge can be initially filtered and dried by the sludge filter pressing device, and then granulated by the sludge granulation and drying device, and after the particles are finally dried by the sludge final drying device, they enter the garbage incinerator as dried sludge and are incinerated in coordination with domestic garbage; the sustainable and high-efficiency effect of low sludge treatment cost, high coordinated incineration ratio and no negative effect on incineration can be achieved.

[0034] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a schematic diagram of the sludge drying coordinated treatment system of the utility model;

[0038] Figure 2 It is a schematic diagram of the sludge receiving device of the utility model;

[0039] Figure 3 It is a schematic diagram of the sludge filter press device of the utility model;

[0040] Figure 4 It is a schematic diagram of a sludge granulation and drying device and a sludge final drying device of the utility model;

[0041] Figure 5 It is a schematic diagram of the exhaust gas collection system of the utility model.

[0042] In the figure:

[0043] Sludge receiving device 1, hopper 11, feed port 111, hydraulic door 112, grille 113, material level meter 114, sludge bin suction port 115, pushing mechanism 12, hydraulic cylinder 121, slide 122, discharge channel 13, gate valve 131, dosing port 132, stirring screw 133, sludge pumping pipe 14, sludge filter press device 2, material distribution device 21, filter press device 22, filter cloth storage device 23, sludge conveying device 24, sludge granulation and drying device 3, roller assembly 31, material temporary storage bin 32, sludge final drying device 4, exhaust gas collection system 5, exhaust gas fan 51, filter press suction port 52, granulation and drying suction port 53, first discharge pipe 55, second discharge pipe 54, garbage incinerator 6. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] See also Figure 1 In one embodiment of the present application, the sludge drying collaborative treatment system includes: a sludge receiving device 1, a sludge filter press device 2, a sludge granulation and drying device 3, a sludge final drying device 4 and a garbage incinerator 6 connected in sequence; wherein the sludge receiving device 1 is used to receive sludge; the sludge filter press device 2 is used to perform preliminary filter pressing and drying of the sludge; the sludge granulation and drying device 3 is used to granulate the sludge after preliminary filter pressing and drying; the sludge final drying device 4 is used to perform final drying of the particles; the garbage incinerator 6 is used to collaboratively incinerate the dried particles and domestic garbage.

[0046] In this embodiment, the sludge can be initially filtered and dried by the sludge filter press device 2, and then granulated by the sludge granulation and drying device 3. After the particles are finally dried by the sludge final drying device 4, they enter the waste incinerator 6 as dried sludge to be co-incinerated with domestic waste. This can achieve a sustainable and high-efficiency effect with low sludge treatment cost, high co-incineration ratio, and no negative effect on incineration.

[0047] In this embodiment, the sludge is received in the sludge receiving device 1, and then sent to the sludge filter press device 2 through the conveying device for preliminary dehydration, and the moisture content is reduced to 50-60% after dehydration. The dehydrated sludge is sent to the granulator through the conveying device for granulation, and the formed particles after granulation are sent to the sludge final drying device 4 for further drying, and the final moisture content can be controlled at about 30%.

[0048] See also Figure 2 Specifically, the sludge receiving device 1 includes:

[0049] A hopper 11, with a feed inlet 111 disposed on the top and a discharge channel 13 disposed on one side of the bottom;

[0050] The pushing mechanism 12 is arranged at the bottom of the hopper 11, and is used to push the sludge into the discharge channel 13; optionally, the pushing mechanism 12 may include a hydraulic cylinder 121 located outside the hopper 11, and a slide 122 located at the bottom of the hopper 11, and the hydraulic cylinder 121 may drive the slide 122 to reciprocate, thereby preventing the bottom sludge from compacting and pushing the sludge into the discharge channel 13;

[0051] The sludge pumping pipe 14 is connected to the outlet of the discharge channel 13 and is used to transport the sludge to the sludge filter press device 2 .

[0052] Optionally, a gate valve 131 is provided at the inlet of the discharge channel 13; the gate valve 131 may be a hydraulic maintenance gate valve, which can be shut down or maintained by closing the gate valve 131.

[0053] Optionally, a stirring screw 133 is provided in the discharge channel 13 ; and a drug adding port 132 is provided above the stirring screw 133 in the discharge channel 13 .

[0054] In this embodiment, a small amount of conditioning agent can be added to the discharge channel 13 through the dosing port 132 to make it easier to reduce the moisture content of the sludge during the rear end filter pressing. The stirring screw 133 can fully stir the sludge; the outlet of the stirring screw 133 can be connected to the inlet of the sludge pumping pipe 14.

[0055] Preferably, a hydraulic door 112 is provided on the feed port 111 to control opening and closing; a grille 113 is provided inside the feed port 111 to prevent people from falling or large debris from entering the feed port 111.

[0056] Preferably, the hopper 11 is also provided with a level meter 114 for detecting the height of the sludge.

[0057] See also Figure 3 In this embodiment, the sludge filter press device 2 can be a filter press sold on the market; or it can be a filter press using existing technology. For example, the sludge filter press device 2 can include: a material distribution device 21, a filter press device 22, a filter cloth receiving and releasing device 23, and a sludge conveying device 24; wherein the material distribution device 21 evenly spreads the sludge between multiple layers of filter cloth; the filter press device 22 is used to filter the filter cloth; the filter cloth receiving and releasing device 23 is used to recover the filter cloth after filtering; the sludge conveying device 24 is used to collect the mud cake dropped from the filter cloth and convey it to the sludge granulation and drying device 3.

[0058] See also Figure 4 Optionally, the sludge granulation device 3 can be a roller granulator, a material temporary storage bin 32 for receiving the sludge after filtration is arranged on the upper part, a roller assembly 31 is arranged inside, and an outlet of the roller granulator is connected to the sludge final drying device 4.

[0059] Optionally, the sludge final drying device 4 is a disc dryer or a belt dryer.

[0060] In the present embodiment, preferably, the sludge drying coordinated treatment system also includes a waste gas collection system 5; the waste gas collection system 5 includes: a waste gas fan 51; a waste gas collection pipe, one end of which is connected to the air inlet of the waste gas fan 51, and the other end is connected to the sludge bin suction port 115, the filter press suction port 52, and the granulation drying suction port 53; a first discharge pipe 55, used to connect the air outlet of the waste gas fan 51 and the emergency treatment equipment; a second discharge pipe 54, used to connect the air outlet of the waste gas fan 51 and the garbage bin.

[0061] In this embodiment, the exhaust gas fan 51 can collect the exhaust gas generated by the hopper 11, the sludge filter press device 2, and the sludge granulation and drying device 3, and then discharge the exhaust gas into the garbage bin and then into the incinerator for incineration; in addition, the exhaust gas fan 51 is also connected to the emergency treatment equipment, and can discharge the exhaust gas into the atmosphere after deodorization and condensation in an emergency state.

[0062] It should be noted that the conveying equipment between devices of the present invention can be implemented by using existing technology, and this application does not improve it.

[0063] In summary, the sludge drying coordinated treatment system of the utility model adopts step-by-step drying to minimize the consumption of steam, and at the same time, the sludge is made into sludge particles with a moisture content of about 30% and a size of 5 to 20 mm, which can be put into the furnace as fuel particles, thereby achieving a positive impact on the incineration conditions; it can achieve sustainable and high-efficiency treatment with low sludge treatment cost, high coordinated furnace feeding ratio, and no negative effect on incineration.

[0064] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0065] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0066] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0067] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A sludge drying collaborative treatment system, characterized in that: include: A sludge receiving device (1), a sludge filter pressing device (2), a sludge granulation and drying device (3), a sludge final drying device (4) and a garbage incinerator (6) connected in sequence; in The sludge receiving device (1) is used to receive sludge; The sludge filter press device (2) is used to perform preliminary filter press drying on the sludge; The sludge granulation and drying device (3) is used to granulate the sludge after preliminary filter pressing and drying; The sludge final drying device (4) is used to final dry the particles; The waste incinerator (6) is used for the coordinated incineration of dried particles and domestic waste.

2. The sludge drying coordinated treatment system according to claim 1 is characterized in that: The sludge receiving device (1) comprises: A hopper (11) having a feed inlet (111) disposed on the top and a discharge channel (13) disposed on one side of the bottom; A pushing mechanism (12) is arranged at the bottom of the hopper (11) and is used to push the sludge into the discharge channel (13); The sludge pumping pipe (14) is connected to the outlet of the discharge channel (13) and is used to transport the sludge to the sludge filter press device (2).

3. The sludge drying coordinated treatment system according to claim 2 is characterized in that: A gate valve (131) is provided at the inlet of the discharge channel (13); A stirring screw (133) is provided in the discharge channel (13); The discharge channel (13) is provided with a drug addition port (132) located above the stirring screw (133).

4. The sludge drying coordinated treatment system according to claim 2, characterized in that: The feed port (111) is provided with a hydraulic door (112); A grid (113) is provided in the feed port (111).

5. The sludge drying coordinated treatment system according to claim 2, characterized in that: The hopper (11) is also provided with a material level meter (114).

6. The sludge drying coordinated treatment system according to claim 1, characterized in that: The sludge filter press device (2) comprises: a material distribution device (21), a filter press device (22), a filter cloth collection and release device (23) and a sludge conveying device (24); wherein The distribution device (21) evenly spreads the sludge between the multiple layers of filter cloth; The filter pressing device (22) is used to perform filter pressing on the filter cloth; The filter cloth collecting and releasing device (23) is used to recover the filter cloth after filtration; The sludge conveying device (24) is used to collect the sludge cake that falls from the filter cloth and convey it to the sludge granulation and drying device (3).

7. The sludge drying coordinated treatment system according to claim 1, characterized in that: The sludge granulation and drying device (3) is a roller granulator, the upper part of which is provided with a material temporary storage bin (32) for receiving the sludge after filtration, and the interior of which is provided with a roller assembly (31), the outlet of which is connected to the sludge final drying device (4).

8. The sludge drying coordinated treatment system according to claim 1, characterized in that: The sludge final drying device (4) is a disc dryer or a belt dryer.

9. The sludge drying coordinated treatment system according to claim 1, characterized in that: It also includes an exhaust gas collection system (5); the exhaust gas collection system (5) includes: Exhaust fan (51); An exhaust gas collection pipe, one end of which is connected to the air inlet of the exhaust gas fan (51), and the other end of which is connected to the sludge bin air suction port (115), the filter press air suction port (52), and the granulation and drying air suction port (53); A first exhaust pipe (55) is used to connect the air outlet of the exhaust gas fan (51) and the emergency treatment equipment; The second exhaust pipe (54) is used to connect the air outlet of the exhaust fan (51) and the garbage bin.

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