System for preparing fuel rod from emulsified liquid

Abstract

The utility model discloses an emulsion preparation fuel rod system which comprises a first emulsion reaction tank, a second emulsion reaction tank, a lime milk storage tank and a PAM agent tank, the lime milk storage tank and the PAM agent tank are connected with the two emulsion reaction tanks respectively, emulsion wastewater inlets are formed in the two emulsion reaction tanks respectively, the first emulsion reaction tank is connected with a PAC agent tank, and the second emulsion reaction tank is connected with a PAM agent tank. The second emulsion reaction tank is connected with a waste acid storage tank; the first emulsion reaction tank and the second emulsion reaction tank are respectively connected with the first plate-and-frame filter press and the second plate-and-frame filter press, filtrate ports of the first plate-and-frame filter press and the second plate-and-frame filter press are connected with the filter-pressing effluent treatment system, filter residue ports of the first plate-and-frame filter press and the second plate-and-frame filter press are respectively connected with the first drying device and the second drying device, and the drying devices are connected with the granulation device. According to the utility model, the wastewater can be discharged up to the standard, the generated oil sludge is prepared into the fuel rod, the treatment cost of the emulsion wastewater and the oil sludge is reduced, the secondary utilization of resources is realized, and a new energy-saving and environment-friendly scheme is provided for treating the emulsion wastewater.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial wastewater treatment, in particular to a fuel rod system for preparing emulsion liquid. Background Art

[0002] Emulsion liquid is mainly applied in metal processing processes such as cutting, grinding, and forging, and its main functions are lubrication, cooling, and cleaning. During the metal processing process, the temperature of the emulsion liquid will be maintained at 45 - 90 °C, and unsaturated fats and emulsifiers are continuously oxidized and decomposed. When the temperature, water, and pH conditions reach certain conditions, microorganisms will multiply in large numbers, further changing the pH and composition of the emulsion liquid, causing the emulsion liquid to deteriorate. At the same time, some impurities will be mixed into the emulsion liquid during use. Therefore, the emulsion liquid has to be replaced after being used for a period of time, and the replaced emulsion liquid is emulsion liquid wastewater.

[0003] The components of emulsion liquid generally include water, base oil (mineral oil or vegetable oil), surfactant, rust inhibitor, friction modifier (anti-friction agent or oiliness additive), and antioxidant, etc. In addition, in order to meet the capabilities of antibacterial and low corrosion, various additives are added to the emulsion liquid, and the composition becomes more complex. While the performance is improved, the treatment difficulty of emulsion liquid wastewater also increases accordingly.

[0004] The key to emulsion liquid treatment is to achieve oil-water separation. The treatment methods include gravity method, centrifugal method, membrane separation method, advanced oxidation method, biological method, chemical demulsification, and adsorption method, etc. Generally, the effluent after oil-water separation is difficult to meet the discharge standard directly and needs to be further treated by biochemical treatment. And the oil or oil sludge is generally disposed of as hazardous waste, and the cost of incineration or landfill is high, and there is no harmless treatment. A large number of bacteria and viruses remain, and there are also potential pollution hazards such as heavy metals lurking. Its garbage leachate will also pollute the groundwater resources for a long time. Therefore, in order to ensure human health and environmental safety, it is necessary to explore a more economical and effective emulsion liquid treatment plan. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a fuel rod system for preparing emulsion liquid, aiming to solve the technical problems existing in the prior art that the emulsion liquid is difficult to treat, and the generated oil or oil sludge is incinerated or landfilled as hazardous waste, with high cost and no harmless treatment, which causes harm to human health and environmental safety.

[0006] The technical solution of the present utility model is: An emulsion preparation fuel rod system, including a first emulsion reaction tank, a second emulsion reaction tank, a lime milk storage tank and a PAM reagent tank respectively connected to the two emulsion reaction tanks. The two emulsion reaction tanks are respectively provided with emulsion wastewater inlets. The first emulsion reaction tank is further connected to a PAC reagent tank, and the second emulsion reaction tank is further connected to a waste acid storage tank. The first emulsion reaction tank and the second emulsion reaction tank are respectively connected to a first plate and frame filter press and a second plate and frame filter press. The filtrate outlets of the first plate and frame filter press and the second plate and frame filter press are connected to a filter press effluent treatment system, and the filter residue outlets are respectively connected to a first drying device and a second drying device. The two drying devices are also connected to a granulation device.

[0007] Further, in the present utility model, the emulsion wastewater inlets of the first emulsion reaction tank and the second emulsion reaction tank are respectively connected to a first raw water tank and a second raw water tank through pipelines.

[0008] Further, in the present utility model, the filter press effluent treatment system includes a Fenton advanced oxidation system and a biochemical system connected in series. The filtrate outlets of the two plate and frame filter presses are respectively connected to the Fenton advanced oxidation system through pipelines.

[0009] Further, in the present utility model, the first drying device and the second drying device are respectively connected with steam condensation effluent pipelines.

[0010] The present utility model has the following advantages compared with the prior art:

[0011] (1) In the present utility model, the emulsion wastewater is demulsified by PAC (polyaluminium chloride) and acid respectively to realize oil-water separation, and is respectively filtered by the plate and frame filter presses. The filter press effluent is treated by the Fenton advanced oxidation system and then enters the biochemical system for treatment and finally reaches the standard for discharge. The obtained filter press sludge is respectively dried by the drying devices, and then the two kinds of sludge are granulated by the granulation device according to the ratio to prepare fuel rods, which are finally converted into fuel that can be resourcefully utilized. The system has low energy consumption and can effectively treat emulsion wastewater.

[0012] (2) The present utility model can not only make the wastewater reach the standard for discharge, but also prepare the generated sludge into fuel rods, reduce the disposal cost of emulsion wastewater and sludge, turn the emulsion sludge into treasure, realize the secondary utilization of resources, and provide a new energy-saving and environmental protection scheme for treating emulsion wastewater. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the system of the present utility model.

[0014] Wherein: 1. The first emulsion reaction tank; 2. The second emulsion reaction tank; 3. The lime milk storage tank; 4. The PAM reagent tank; 5. The PAC reagent tank; 6. The waste acid storage tank; 7. The first raw water tank; 8. The second raw water tank; 9. The first plate and frame filter press; 10. The second plate and frame filter press; 11. The Fenton advanced oxidation system; 12. The biochemical system; 13. The first drying device; 14. The second drying device; 15. The granulation device; 16. The steam condensate outlet pipe. Detailed implementation manners

[0015] The following specifically describes the detailed implementation manners of the present utility model in conjunction with the accompanying drawings.

[0016] Embodiment:

[0017] As shown in the accompanying drawings, the detailed implementation manners of a fuel rod system for preparing emulsion are shown for the present utility model. As Figure 1 , it mainly includes the first emulsion reaction tank 1, the second emulsion reaction tank 2, the lime milk storage tank 3 and the PAM reagent tank 4 respectively connected to the two emulsion reaction tanks. The emulsion wastewater inlets are respectively provided on the two emulsion reaction tanks. The emulsion wastewater inlets of the first emulsion reaction tank 1 and the second emulsion reaction tank 2 are respectively connected to the first raw water tank 7 and the second raw water tank 8 through pipelines. The first emulsion reaction tank 1 is also connected to the PAC reagent tank 5, and the second emulsion reaction tank 2 is also connected to the waste acid storage tank 6.

[0018] The first emulsion reaction tank 1 and the second emulsion reaction tank 2 are respectively connected to the first plate and frame filter press 9 and the second plate and frame filter press 10. The filtrate outlets of the first plate and frame filter press 9 and the second plate and frame filter press 10 are connected to the filter press effluent treatment system. The filter press effluent treatment system includes a series-connected Fenton advanced oxidation system 11 and a biochemical system 12. The filtrate outlets of the two plate and frame filter presses are respectively connected to the Fenton advanced oxidation system 11 through pipelines. The filter residue outlets of the first plate and frame filter press 9 and the second plate and frame filter press 10 are respectively connected to the first drying device 13 and the second drying device 14. The first drying device 13 and the second drying device 14 are respectively connected with the steam condensate outlet pipe 16. The two drying devices are also connected to the granulation device 15.

[0019] When this embodiment works specifically:

[0020] (1) Lift the emulsion wastewater in the first raw water tank 7 to the first emulsion reaction tank 1 by pump a. Pump 30% lime milk from the lime milk storage tank 3 into the first emulsion reaction tank 1 through pump d to adjust the pH to 8 - 9. Then pump PAC from the PAC chemical tank 5 into the first emulsion reaction tank 1 through pump b for demulsification. During the reaction process, ensure that the pH of the emulsion wastewater is 8 - 9, and mechanically stir for 10 min. Then pump PAM from the PAM chemical tank 4 into the first emulsion reaction tank 1 through pump c for flocculation precipitation, mechanically stir for 10 min, and then precipitate for 30 min.

[0021] (2) Lift the emulsion wastewater in the second raw water tank 8 to the second emulsion reaction tank 2 by pump e. Add waste acid from the waste acid storage tank 6 to the second emulsion reaction tank 2 through pump f to adjust the pH of the emulsion wastewater < 2 for demulsification by acid, and mechanically stir for 30 min. Then add 30% lime milk from the lime milk storage tank 3 to the second emulsion reaction tank 2 to adjust the pH to 8 - 9, and then add PAM in the PAM chemical tank 4 to the second emulsion reaction tank 2 for flocculation precipitation, mechanically stir for 10 min, and then precipitate for 30 min.

[0022] (3) The muddy water mixtures obtained from the reactions in the first emulsion reaction tank 1 and the second emulsion reaction tank 2 are respectively sent to the first plate - and - frame filter press 9 and the second plate - and - frame filter press 10 by pump g and pump h. The oil sludges obtained by pressing the two plate - and - frame filter presses are continuously dried by the first drying device 13 and the second drying device 14 using 80°C condensed water sent through the steam condensation water pipeline 16. The filtered water from the two plate - and - frame filter presses is treated by the Fenton advanced oxidation system 11 and then enters the biochemical system 12 for treatment, and finally reaches the standard for discharge.

[0023] (4) The PAC - demulsified oil sludge and acid - demulsified oil sludge obtained after drying by the first drying device 13 and the second drying device 14 are compounded, and then granulated by the granulation device 15 to prepare fuel rods, improving the resource utilization effect of the emulsion and reducing the disposal cost of the oil sludge.

[0024] Of course, the above - mentioned embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. All modifications made according to the spirit of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A system for preparing fuel rods using an emulsion, characterized in that: The invention comprises a first emulsion reaction tank (1), a second emulsion reaction tank (2), a lime milk storage tank (3) and a PAM agent tank (4) respectively connected to the two emulsion reaction tanks. The two emulsion reaction tanks are respectively provided with an emulsion wastewater inlet. The first emulsion reaction tank (1) is also connected to a PAC agent tank (5), and the second emulsion reaction tank (2) is also connected to a waste acid storage tank (6). The first emulsion reaction tank (1) and the second emulsion reaction tank (2) are respectively connected to a first plate-frame filter press (9) and a second plate-frame filter press (10). The filtrate ports of the first plate-frame filter press (9) and the second plate-frame filter press (10) are connected to a filter press effluent treatment system, and the filter residue ports are respectively connected to a first drying device (13) and a second drying device (14). The two drying devices are also connected to a granulating device (15).

2. The system for preparing fuel rods from an emulsion according to claim 1, characterized in that: The emulsion wastewater inlets of the first emulsion reaction tank (1) and the second emulsion reaction tank (2) are connected to the first raw water tank (7) and the second raw water tank (8) respectively through pipelines.

3. The system for preparing fuel rods from an emulsion according to claim 1, characterized in that: The filter press effluent treatment system comprises a Fenton advanced oxidation system (11) and a biochemical system (12) connected in series, and the filtrate ports of the two plate and frame filter presses are respectively connected to the Fenton advanced oxidation system (11) through pipelines.

4. The system for preparing fuel rods from an emulsion according to claim 1, characterized in that: The first drying device (13) and the second drying device (14) are respectively connected to a steam condensation water outlet pipe (16).

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