Integrated device for preparing flocculant powder from fly ash

Abstract

The utility model discloses an integrated device for preparing flocculant powder from fly ash, which comprises an extraction chamber, an aging reaction chamber, a rotary spray drying chamber and a product collecting chamber, a discharge port at the bottom of the extraction chamber is connected with the aging reaction chamber through a pipeline, the bottom of the aging reaction chamber is connected with a spray gun through a pipeline, the spray gun extends into the rotary spray drying chamber, and the rotary spray drying chamber is connected with the product collecting chamber through a pipeline. The product collecting chamber is located under a discharging port of the rotary spray drying chamber. An electric heating layer is arranged at the bottom of the extraction chamber; a filter is arranged at a discharge hole in the bottom of the extraction chamber. The device is an integrated continuous production device, has experiment and detection functions, is simple to operate and is suitable for industrial production.

Description

Technical Field

[0001] The utility model belongs to the technical field of flocculant preparation, and particularly relates to an integrated device for preparing flocculant powder from fly ash. Background Art

[0002] Fly ash is a waste product emitted by coal-fired power plants. Its main components include aluminum oxide, iron oxide and silicon dioxide, which gives fly ash a unique advantage in making flocculants. The method of making flocculants from fly ash includes the following steps: mixing fly ash, pyrite slag and soda ash, roasting, leaching with hydrochloric acid, and aging treatment to obtain polysilicate aluminum ferric chloride.

[0003] Existing research focuses primarily on the process of producing flocculants from fly ash, with relatively little improvement in the equipment used. For example, Chinese patent CN204162494U discloses a fly ash flocculant production device. However, this device is limited to laboratory use and cannot be directly scaled up for industrial use. Furthermore, the existing process flow is discontinuous and lacks integrated equipment, limiting the production efficiency of flocculant powder. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide an integrated device for preparing flocculant powder from fly ash.

[0005] The specific technical solutions are as follows:

[0006] An integrated device for producing flocculant powder from fly ash comprises a leaching chamber, an aging reaction chamber, a rotary spray drying chamber and a product collection chamber. The bottom discharge port of the leaching chamber is connected to the aging reaction chamber via a pipeline. The bottom of the aging reaction chamber is connected to a spray gun via a pipeline. The spray gun extends into the rotary spray drying chamber. The product collection chamber is located directly below the discharge port of the rotary spray drying chamber. An electric heating layer is provided at the bottom of the leaching chamber, and a filter is provided at the bottom discharge port of the leaching chamber.

[0007] Furthermore, a feeding funnel and an acid material feeding port are provided on the top of the leaching chamber, a fly ash feeding metering pump is provided at the feeding funnel, and an acid material feeding metering pump is provided at the acid material feeding port.

[0008] Furthermore, an agitator is provided in the extraction chamber, and the agitator extends to the bottom of the extraction chamber.

[0009] Furthermore, an electric valve and a suction pump are provided on the pipeline connecting the leaching chamber and the aging reaction chamber.

[0010] Furthermore, a spare feed port and a vent valve are provided on the top of the aging reaction chamber, and the top of the aging reaction chamber is connected to the liquid storage tank through a pipeline. A filter material is provided at the bottom outlet of the aging reaction chamber, and a discharge valve is provided on the pipeline connecting the aging reaction chamber and the spray gun.

[0011] Furthermore, the rotary spray drying chamber includes a rotatable barrel body, and a scraping brush is provided on the inner wall of the barrel body. The upper end of the scraping brush is fixed on the external bracket, and the lower end extends vertically to the bottom of the inner wall of the barrel body.

[0012] The beneficial effects of the present invention are:

[0013] 1) It can realize the continuous production of flocculants from fly ash and improve production efficiency;

[0014] 2) A spare feeding port is set in the aging reaction chamber, and fly ash can be added according to the actual effect to increase the flocculant powder output rate;

[0015] 3) Rotary spray drying combines the effects of temperature and rotating centrifugal force to improve the efficiency of flocculant powder extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] In the figure: 1. Extraction chamber; 11. Electric heating layer; 12. Filter; 13. Feeding funnel; 14. Acid material addition inlet; 15. Fly ash sampling and metering pump; 16. Acid material sampling and metering pump; 17. Agitator; 2. Aging reaction chamber; 21. Alternate feed inlet; 22. Vent valve; 23. Discharge valve; 3. Rotary spray drying chamber; 31. Barrel body; 32. Scraping brush; 4. Product collection chamber; 5. Spray gun; 6. Electric valve; 7. Filter pump; 8. Liquid storage tank. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings, but the protection scope of the present invention is not limited thereto.

[0019] like Figure 1As shown, an integrated device for preparing flocculant powder from fly ash includes a leaching chamber 1, an aging reaction chamber 2, a rotary spray drying chamber 3 and a product collecting chamber 4. The bottom discharge port of the leaching chamber 1 is connected to the aging reaction chamber 2 through a pipeline. The bottom of the leaching chamber 1 is provided with an electric heating layer 11, and the bottom discharge port of the leaching chamber 1 is provided with a filter 12. The top of the leaching chamber 1 is provided with a feeding funnel 13 and an acid material addition port 14. A fly ash sampling and metering pump 15 is provided at the feeding funnel 13, and an acid material sampling and metering pump 16 is provided at the acid material addition port 14. A stirrer 17 is also provided in the leaching chamber 1, and the stirrer 17 extends to the bottom of the leaching chamber 1. An electric valve 6 and a suction pump 7 are provided on the pipeline connecting the leaching chamber 1 and the aging reaction chamber 2. The top of the aging reaction chamber 2 is provided with a spare feed port 21 and a vent valve 22, and the top of the aging reaction chamber 2 is connected to the liquid storage tank 8 through a pipeline, and a filter material is provided at the bottom outlet of the aging reaction chamber 2. The bottom of the aging reaction chamber 2 is connected to the spray gun 5 through a pipeline, and the spray gun 5 extends into the rotary spray drying chamber 3. A discharge valve 23 is provided on the pipeline connecting the aging reaction chamber 2 and the spray gun 5. The rotary spray drying chamber 3 includes a rotatable barrel body 31, and a scraping brush 32 is provided on the inner wall of the barrel body 31. The upper end of the scraping brush 32 is fixed on the external bracket, and the lower end extends vertically to the bottom of the inner wall of the barrel body 31. The product collection chamber 4 is located directly below the discharge port of the rotary spray drying chamber 3.

[0020] A process for preparing flocculant powder from fly ash using the above-mentioned device comprises the following steps:

[0021] 1) Fly ash activated by high-temperature roasting is metered by a fly ash sample metering pump 15 and then added to the leaching chamber 1 through a feeding funnel 13. Acid is metered by an acid sample metering pump 16 and then added to the leaching chamber 1 through an acid inlet 14. Simultaneously, the electric heating layer 11 and the stirrer 17 are turned on to perform element leaching according to the designed temperature.

[0022] 2) After the extraction is completed, the electric valve 6 and the suction pump 7 are opened, and the extraction mixture is filtered through the filter 12. The solid residue is discharged as solid waste, and the extraction liquid is transported to the aging reaction chamber 2 through the suction pump 7 for aging reaction. Reaction raw materials can be added as needed through the standby feed port 21 to complete the derivatization process;

[0023] 3) The matured mixture enters the spray gun 5 through the discharge valve 23, where it is atomized and sprayed into the rotating barrel body 31. The water in the sample evaporates in the rotary spray drying chamber 3, while the solid sample adheres to the inner wall of the barrel body 31 as it rotates. During the rotation, it is caught by the scraper 32 and enters the product collection chamber 4.

Claims

1. An integrated device for producing flocculant powder from fly ash, characterized in that: The invention comprises an extraction chamber (1), an aging reaction chamber (2), a rotary spray drying chamber (3) and a product collecting chamber (4), wherein the bottom discharge port of the extraction chamber (1) is connected to the aging reaction chamber (2) via a pipeline, the bottom of the aging reaction chamber (2) is connected to a spray gun (5) via a pipeline, the spray gun (5) extends into the rotary spray drying chamber (3), and the product collecting chamber (4) is located directly below the discharge port of the rotary spray drying chamber (3); An electric heating layer (11) is provided at the bottom of the extraction chamber (1), and a filter (12) is provided at the discharge port at the bottom of the extraction chamber (1).

2. The integrated device for producing flocculant powder from fly ash according to claim 1, characterized in that: A feeding funnel (13) and an acid material feeding port (14) are provided at the top of the leaching chamber (1). A fly ash feeding metering pump (15) is provided at the feeding funnel (13), and an acid material feeding metering pump (16) is provided at the acid material feeding port (14).

3. The integrated device for producing flocculant powder from fly ash according to claim 2, characterized in that: A stirrer (17) is also provided in the extraction chamber (1), and the stirrer (17) extends to the bottom of the extraction chamber (1).

4. The integrated device for producing flocculant powder from fly ash according to claim 3, characterized in that: An electric valve (6) and a filtration pump (7) are provided on the pipeline connecting the extraction chamber (1) and the aging reaction chamber (2).

5. The integrated device for producing flocculant powder from fly ash according to claim 4, characterized in that: The top of the aging reaction chamber (2) is provided with a spare feed port (21) and a vent valve (22), and the top of the aging reaction chamber (2) is connected to the liquid storage tank (8) through a pipeline. A filter material is provided at the bottom outlet of the aging reaction chamber (2), and a discharge valve (23) is provided on the pipeline connecting the aging reaction chamber (2) and the spray gun (5).

6. The integrated device for producing flocculant powder from fly ash according to claim 5, characterized in that: The rotary spray drying chamber (3) comprises a rotatable barrel body (31), wherein a scraping brush (32) is provided on the inner wall of the barrel body (31), wherein the upper end of the scraping brush (32) is fixed to an external bracket, and the lower end of the scraping brush (32) vertically extends to the lower side of the inner wall of the barrel body (31).

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