CN218340608U - An integrated device for waste incineration fly ash micro-power water washing - Google Patents

Abstract

The utility model relates to the technical field of fly ash treatment, in particular to a micro-power washing integrated device for waste incineration fly ash, which comprises a pre-washing clarification area, a primary cyclone sedimentation area, a primary washing area, a secondary cyclone sedimentation area and a secondary washing area; the pre-washing clarification zone is connected with the primary cyclone sedimentation zone; an overflow baffle, a mud-water separation baffle, a different wave folded plate, a water inlet and distribution system and a mud-water turbulent flow reaction area are arranged in the primary rinsing area; the primary rinsing area is connected with the secondary hydrocyclone through a secondary gravity flow pipe; and a material distribution system is arranged in the secondary rinsing area and is connected with a mud underflow port of the secondary hydrocyclone. The utility model realizes the mutual mixing and rinsing process of mud and water through the water inlet and distribution system and the distribution system without power stirring equipment; the occupied area is small, and the problems of large occupied area, high energy consumption and high failure rate of a washing tank and solid-liquid separation equipment in the common multistage washing process are solved.

Description

An integrated device for waste incineration fly ash micro-power water washing

technical field

The utility model relates to the technical field of fly ash treatment, in particular to a waste incineration fly ash micro power washing integrated device.

Background technique

Waste incineration technology has gradually become the mainstream trend of domestic waste treatment in my country due to its advantages in reducing volume. However, a large amount of fly ash produced during waste incineration is listed as hazardous waste by countries all over the world due to its high concentration of chloride salts, trace heavy metals and traces of persistent organic pollutants (dioxins). Therefore, waste incineration fly ash must be strictly disposed of before being landfilled and recycled.

Fly ash is rich in high concentrations of soluble chloride salts, which brings difficulties to the resource utilization process of fly ash (cement kiln co-processing). Therefore, dechlorination is an essential part of the fly ash disposal process. At present, the fly ash dechlorination technology is relatively simple. The chlorine entering the fly ash is mainly transferred to the liquid phase by using the aqueous solution as the leaching agent through washing technology, so as to reduce the content of salts (chloride, etc.) and improve the quality of the fly ash after pretreatment. The grade of the disposal product reduces the environmental and biological hazards of fly ash and at the same time increases the value of the product.

As an effective pretreatment method, water washing can significantly improve the disposal effects of cement solidification, cement kiln co-processing, sintering/melting and carbonation, and also provide a basis for the large-scale resource utilization of subsequent products (such as cement, lightweight aggregate, etc.) etc.) provide the basis. The existing washing process adopts a multi-stage washing system, which is cumbersome and complicated and occupies a large area. Each stage of washing requires electric drive devices such as washing tanks, dehydration equipment, and feeding pumps. The moisture content of the cake is about 35%. When it enters the next stage of washing tank, it needs to be broken up by the stirring motor before it can be fully washed. This process requires high power drive. Therefore, the complete dechlorination operation of the fly ash washing process is more complicated and consumes more energy.

Utility model content

The utility model solves the problems of large floor area and high energy consumption of the water washing device in the related art, and proposes a waste incineration fly ash micro-power water washing integrated device, which realizes mud and water through the water inlet distribution system and the material distribution system. The intermixing and rinsing process does not require power stirring equipment; the floor space is small, and there is no need for supporting mud pumps, belt conveyors and other power transmission equipment. High, high failure rate problems.

In order to solve the above-mentioned technical problems, the utility model is realized through the following technical solutions: a waste incineration fly ash micro-power water washing integrated device, including a pre-washing clarification area, a primary swirling sedimentation area, a primary rinsing area, a secondary The swirl sedimentation area, the secondary rinsing area, the pre-washing clarification area, the primary rinsing area and the lower part of the secondary rinsing area all form a conical structure; the upper part of the pre-washing clarification area is provided with a supernatant outlet pipe and a mud inlet. The feed pipe, the first-stage cyclone sedimentation area is provided with several first-stage hydrocyclones, the pre-washing clarification area is connected with the first-stage hydrocyclones; the upper part of the first-stage rinsing area is provided with an overflow water pipe, The primary rinsing area is provided with an overflow baffle, a mud-water separation baffle, a different wave folding plate, an inlet water distribution system, and a mud-water turbulent reaction area. The outlet of the pre-washing clarification area is located at the mud-water turbulent reaction area Above the area and below the water inlet distribution system, the mud bottom flow port of the first-stage hydrocyclone is connected to the upper section of the mud-water turbulent flow reaction area and is located below the inlet water distribution system; the second-stage cyclone The sedimentation area includes several secondary hydrocyclones, and the primary rinsing area is connected with the secondary hydrocyclones; the secondary rinsing area is provided with a distribution system, and the distribution system is connected to the secondary hydrocyclones. Mud bottom outlets are connected.

As a preferred solution, the pre-washing clarification zone is connected to the feed port I of the primary hydrocyclone through a primary gravity flow pipe, and a primary feed control valve is installed on the primary gravity flow pipe. A self-weight discharge valve is installed at the outlet of the clarification zone, and the self-weight discharge valve is located above the muddy water turbulent flow reaction zone and below the water inlet and distribution system.

As a preferred solution, the primary hydrocyclone is provided with an overflow port I; the secondary hydrocyclone is provided with an overflow port II.

As a preferred solution, the sinking area of the primary rinsing area is connected to the feed port II of the secondary hydrocyclone through a secondary gravity flow pipe; a secondary feed control valve is installed on the secondary gravity flow pipe .

As a preferred solution, the folded plate with different waves has a structure in which the crests are opposite and the troughs are opposite.

As a preferred solution, the water inlet distribution system is composed of six water inlet pipes embedded in the first-level rinsing area, which are horizontally distributed. The water inlet pipes are three long pipes and three short pipes. A plurality of component stream branch pipes are vertically arranged on the main pipe, and each of the branch pipes is provided with circular holes on three sides.

As a preferred solution, the upper part of the secondary rinsing area is provided with an overflow outlet pipe, and the bottom is provided with a mud self-discharging pipe, and the distribution system is an inverted cone group structure evenly distributed on a rectangular plane.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The mixing and rinsing process of mud and water is realized through the water distribution system and the distribution system without power stirring equipment;

(2) The device occupies a small area and does not need supporting mud pumps, belt conveyors and other power transmission equipment, which solves the problems of large floor area, high energy consumption and high failure rate of water washing tanks and solid-liquid separation equipment in the ordinary multi-stage washing process. question.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic structural view of the water inlet distribution system of the present invention;

Fig. 3 is a schematic structural view of the water inlet pipe in the water inlet distribution system of the present invention;

Fig. 4 is a structural schematic diagram of the distribution system of the present invention.

In the picture:

1. Pre-washing and clarification area, 1-1, mud feed pipe, 1-2, supernatant liquid outlet pipe, 1-3, primary feed control valve, 1-4, primary gravity flow pipe, 1-5 , self-weight unloading valve; 2, primary cyclone sedimentation area, 2-1, feed inlet Ⅰ, 2-2, overflow outlet Ⅰ, 2-3, sludge bottom flow port Ⅰ; 3, primary rinsing area, 3-1, overflow water pipe, 3-2, overflow baffle, 3-3, mud-water separation baffle, 3-4, different wave folding plate, 3-5, water inlet distribution system, 3-6, muddy water turbulence Flow reaction area, 3-7, secondary feed control valve, 3-8, secondary gravity flow pipe; 4, secondary swirling sedimentation area, 4-1, feed inlet II, 4-2, overflow outlet Ⅱ, 4-3, bottom outlet of mud material Ⅱ; 5, secondary rinsing area, 5-1, overflow outlet pipe, 5-2, material distribution system, 5-3, water inlet pipe, 5-4, mud self-discharging pipe .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. The following description of at least one exemplary embodiment is merely illustrative in nature, and in no way serves as any limitation of the invention and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that the terminology used here is only used to describe specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present utility model, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate The orientation or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply the referred device Or components must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as limiting the protection scope of the present utility model; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations”. Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. To limit the scope of protection of the utility model.

As shown in Figures 1 to 4, a waste incineration fly ash micro-power water washing integrated device includes a pre-washing clarification area 1, a primary cyclone sedimentation area 2, a primary rinsing area 3, a secondary cyclone sedimentation area 4, Secondary rinsing area 5, wherein, the lower part of the pre-washing and clarification area 1, the first-level rinsing area 3 and the second-level rinsing area 5 all form a conical structure (the structure is similar to the mud bucket), which is convenient for the discharge of materials, pre-washing and clarification The upper part of zone 1 is provided with a supernatant liquid outlet pipe 1-2 and a mud feed pipe 1-1, the primary cyclone sedimentation zone 2 is provided with several primary hydrocyclones, and the pre-washing and clarification zone 1 is connected with the primary hydrocyclone The upper part of the first-level rinsing area 3 is provided with an overflow water pipe 3-1, and the first-level rinsing area 3 is provided with an overflow baffle 3-2, a mud-water separation baffle 3-3, a different wave folding plate 3-4 and The muddy water turbulent reaction zone 3-6, the outlet of the pre-washing and clarification zone 1 is located above the muddy water turbulent reaction zone 3-6 and below the water inlet water distribution system 3-5, and the overflow baffle 3-2 is located in the overflow water Below the pipe 3-1, the mud-water separation baffle 3-3 and the different wave folding plate 3-4 are connected to each other to form a barrier layer and are located above the outlet of the pre-washing clarification zone 1, and the mud of the primary hydrocyclone The material bottom outlet I2-3 is connected to the upper section of the mud-water turbulent flow reaction zone 3-6 and is located below the water inlet distribution system 3-5; the secondary cyclone sedimentation zone 4 includes several secondary hydrocyclones, the primary The rinsing area is connected to the secondary hydrocyclone; the secondary rinsing area 5 is provided with a distributing system 5-2, and the distributing system 5-2 is connected to the mud bottom outlet II 4-3 of the secondary hydrocyclone.

Among them, the number of first-stage hydrocyclones configured in the first-stage cyclone sedimentation zone 2 is determined according to the amount of mud, generally 4 to 12 can be set, and the first-stage hydrocyclones are also provided with overflow ports I2-2; The number of secondary hydrocyclones configured in the primary cyclone sedimentation zone 4 is determined according to the amount of mud, generally 4 to 8 can be set, and the secondary hydrocyclones are also provided with overflow ports II4-2.

In one embodiment, the upper and lower parts of the pre-washing clarification zone 1 form two conical structures with different sizes, the upper part forms a first conical structure with a larger size, and the lower part forms a second mud conical structure with a smaller size, The pre-washing clarification zone 1 links to each other with the feed inlet I 2-1 of the first-stage hydrocyclone through the first-stage gravity artesian pipe 1-4, (only one group of one-stage gravity artesian pipes 1-4 and one group of one-stage gravity artesian pipes 1-4 and one In the case where the first-stage cyclone sedimentation area 2 is connected, there are three groups of first-stage gravity artesian pipes 1-4 whose connection relationship is not shown), wherein, the first-stage gravity artesian pipes 1-4 are located on the inclined wall of the first conical structure Above; the first-level gravity flow pipe 1-4 is equipped with a first-level feed control valve 1-3, and the outlet of the pre-washing clarification area 1 is equipped with a self-weight discharge valve 1-5, and the self-weight discharge valve 1-5 is located in the muddy water Above the turbulent flow reaction zone 3-6, below the water inlet and distribution system 3-5.

In one embodiment, the sinking area of the primary rinsing area 3 is connected to the feed port II 4-1 of the secondary hydrocyclone through the secondary gravity artesian pipe 3-8; the secondary gravity artesian pipe 3-8 is installed There are secondary feed control valves 3-7.

In one embodiment, the different corrugated plates 3-4 have a structure with opposite crests and opposite troughs, so that the flow velocity of muddy water sometimes shrinks to a minimum and sometimes expands to a maximum, thereby generating turbulence and helping the coagulation of fine particle suspended mud Agglomeration is beneficial to the separation of mud and water.

In one embodiment, the water inlet and water distribution system 3-5 is composed of six water inlet pipes embedded in the first-stage rinsing area 3, which are horizontally distributed. The water inlet pipes are three long pipes and three short pipes arranged alternately. There are a number of component flow branch pipes vertically arranged on the main road of the main pipe, and round holes are opened on three sides of each branch pipe. A turbulent water layer is formed, and the water in a turbulent state will disperse the mud entering from the self-weight discharge valve 1-5 and the mud bottom flow port I2-3 of the first-stage hydrocyclone for rinsing.

In one embodiment, the upper part of the secondary rinsing area 5 is provided with an overflow outlet pipe 5-1, the bottom is provided with a mud self-discharging pipe 5-4, and the distribution system 5-2 is an inverted cone evenly distributed on a rectangular plane Group-structured pipes disperse the mud material into fine fluid columns and enter the secondary rinsing area 5, and the mud material enters the secondary rinsing area 5 from top to bottom by gravity through the mud bottom outlet II4-3 of the secondary hydrocyclone The upper end is mixed with water for rinsing; then the large-grain mud material settles slowly, the mud is discharged from the discharge pipe 5-4, and the supernatant flows out from the overflow outlet pipe 5-1.

The working principle of the device is as follows:

The fly ash washing slurry prepared from the fly ash pulping tank flows into the pre-washing and clarification zone 1 from the mud feed pipe 1-1, and the fly ash particles sink by their own gravity. After a certain period of slow flow settlement, the fly ash slurry and Water-solid-liquid separation, washing clarification liquid overflows from the supernatant liquid outlet pipe 1-2, the conical structure below the pre-washing clarification area uses gravity pressure to activate the self-weight discharge valve 1-5, and the mud with high particle density enters the first stage In the mud-water turbulent flow reaction zone 3-6 of the rinsing zone 3, at this time, the primary feed control valve 1-3 is opened, and the fly ash slurry mixture with a relatively small particle density in the sinking zone of the pre-washing clarification zone 1 passes through the primary The gravity self-flow pipe 1-4 enters the primary cyclone sedimentation area 2 for concentration, the clarified liquid flows out through the overflow outlet Ⅰ2-2, and the fly ash concentrated mud enters the muddy water turbulence in the primary rinsing area 3 through the mud bottom flow port Ⅰ2-3. At the same time, start the water distribution system 3-5 to carry out the water distribution operation, and the water will flow into the primary rinsing area 3 at a certain flow rate through the branch pipe through the water inlet pressure, forming a turbulent water layer, showing a turbulent flow The water in the state will disperse the mud entering from the self-weight discharge valve 1-5 and the mud bottom outlet I2-3 of the first-stage hydrocyclone, and perform the first-stage rinsing operation; the fly ash mud with larger particle density will fall into the In the sinking area of the primary rinsing area 3, the suspended particles with low density will float up, and the mud-water separation baffle 3-3 and the different wave folding plate 3-4 will form a barrier to intercept the particles with low density, and at the same time, the different wave folding plate 3-4 The structure will promote the coagulation and agglomeration of small particle suspensions into larger particles to settle, and realize the solid-liquid separation process of fly ash slurry. The supernatant overflows from the overflow water pipe 3-1 through the overflow baffle 3-2, and passes Stage feed control valve 3-7, the mud in the sinking area of the stage 1 rinse area 3 flows into the stage 2 cyclone sedimentation area 4 from the stage 2 gravity artesian flow pipe 3-8 for concentration, and the clarified liquid flows out through the overflow outlet II 4-2 , the fly ash concentrated mud enters the secondary rinsing area 5 from the mud bottom outlet II 4-3 through the distribution system 5-2, and the distribution system 5-2 is composed of inverted cone groups evenly distributed on a rectangular plane to disperse the mud The fine fluid column enters the secondary rinsing area 5. Before the mud material enters the secondary rinsing area 5, the water level must pass through the water inlet pipe 5-3 to cover the distribution system 5-2, and the mud material passes through the secondary hydrocyclone. The mud flow port II 4-3 enters the upper end of the secondary rinsing area from top to bottom by gravity for mixing and rinsing with water; then the large-grained mud settles slowly, the mud is discharged from the discharge pipe 5-4, and the supernatant is discharged from the discharge pipe 5-4. Overflow water pipe 5-1 flows out.

Pre-washing and clarification zone 1 uses the density difference between fly ash slurry and water, and the fly ash particles sink under their own gravity, so that the fly ash slurry is divided into clarified liquid and mud to achieve the effect of solid-liquid separation; the mud in the sedimentation zone enters the hydraulic In the hydrocyclone, the water head difference generated by gravity is used to rotate at a certain flow rate in the cyclone, and the particles with larger particle size and density are thrown to the wall of the cyclone, and slide down the wall under the push of the swirling water and the action of gravity. Concentrated mud is formed at the bottom of the cone and discharged continuously.

The above is a preferred embodiment of the utility model, and those skilled in the art of the utility model can also change and modify the above-mentioned implementation. Therefore, the utility model is not limited to the above-mentioned specific implementation. Any obvious improvement, replacement or modification made on the basis of the present utility model belongs to the protection scope of the present utility model.

Claims (7)

1. A waste incineration fly ash micro-power water washing integrated device, characterized in that it includes a pre-washing clarification area (1), a primary cyclone sedimentation area (2), a primary rinsing area (3), a secondary cyclone Precipitation zone (4), secondary rinsing zone (5), the lower part of the pre-washing clarification zone (1), primary rinsing zone (3) and secondary rinsing zone (5) all form a conical structure. The upper part of the washing clarification area (1) is provided with a supernatant liquid outlet pipe (1-2) and a mud feed pipe (1-1), and the first-stage cyclone sedimentation area (2) is provided with several first-stage hydrocyclones , the pre-washing clarification area (1) is connected with a primary hydrocyclone; the upper part of the primary rinsing area (3) is provided with an overflow water pipe (3-1), and the primary rinsing area (3) There are overflow baffles (3-2), mud-water separation baffles (3-3), different corrugated flaps (3-4), water inlet distribution system (3-5) and mud-water turbulence reaction zone (3 -6), the outlet of the pre-washing clarification zone (1) is located above the muddy water turbulent reaction zone (3-6) and below the water inlet distribution system (3-5), and the first-stage hydrocyclone The mud material bottom outlet I (2-3) of the device is connected to the upper section of the mud-water turbulent flow reaction zone (3-6) and is located below the water inlet water distribution system (3-5); the secondary cyclone sedimentation zone (4) comprising several secondary hydrocyclones, the primary rinsing area (3) is connected to the secondary hydrocyclones; the secondary rinsing area (5) is provided with a distributing system (5-2), The distributing system (5-2) is connected to the mud bottom outlet II (4-3) of the secondary hydrocyclone. 2. The waste incineration fly ash micro-power water washing integrated device according to claim 1, characterized in that: the pre-washing clarification area (1) is connected with the first-stage gravity flow pipe (1-4) and the first-stage hydrocyclone The feed inlet I (2-1) of the device is connected, and the first-stage gravity flow pipe (1-4) is equipped with a first-stage feed control valve (1-3), and the outlet of the pre-washing clarification area (1) A self-weight discharge valve (1-5) is installed at the feed port, and the self-weight discharge valve (1-5) is located above the muddy water turbulent flow reaction zone (3-6), at the top of the water inlet and distribution system (3-5) below. 3. The waste incineration fly ash micro-power water washing integrated device according to claim 1, characterized in that: the first-stage hydrocyclone is provided with an overflow port I (2-2); The cyclone is provided with an overflow port II (4-2). 4. The waste incineration fly ash micro-power water washing integrated device according to claim 1, characterized in that: the sinking area of the primary rinsing area (3) is connected to the feed port II of the secondary hydrocyclone ( 4-1) connected through a secondary gravity flow pipe (3-8); the secondary gravity flow pipe (3-8) is equipped with a secondary feed control valve (3-7). 5. The waste incineration fly ash micro-power water washing integrated device according to claim 1, characterized in that: the different wave folded plate (3-4) has a structure with opposite crests and opposite troughs. 6. The waste incineration fly ash micro-power water washing integrated device according to claim 1, characterized in that: the water inlet and distribution system (3-5) consists of six branches embedded in the primary rinsing area (3) The water inlet pipes are horizontally distributed. The water inlet pipes are three long pipes and three short pipes arranged in a staggered manner. There are several component flow branch pipes vertically arranged on the main road of each water inlet pipe. hole. 7. The waste incineration fly ash micro-power water washing integrated device according to claim 1, characterized in that: the upper part of the secondary rinsing area (5) is provided with an overflow outlet pipe (5-1), and the bottom is provided with a mud automatic The discharge pipe (5-4), the material distribution system (5-2) is an inverted cone group structure uniformly distributed on a rectangular plane.

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