Waste oil high-purification-rate treatment equipment

Abstract

The utility model relates to the technical field of oil purification treatment, in particular to high-purification-rate treatment equipment for waste oil, which solves the problem of poor purification and filtration treatment effects on the waste oil in the prior art, and comprises a multi-stage treatment device which is respectively connected with a circulating filtration device and a vacuum pump, the multi-stage treatment device comprises a degumming treatment tank, the outlet end of the degumming treatment tank is connected with the inlet end of a decoloring treatment tank through a pipeline, and stirrers and heating devices are mounted on the degumming treatment tank and the decoloring treatment tank respectively; a circulating discharge pipe is connected between the circulating filtering device and the multi-stage treatment device, and a pipeline between the inlet end of the circulating filtering device and the outlet end of the multi-stage treatment device and the circulating discharge pipe form a circulating structure. The waste oil recycling device is used for purifying and filtering waste oil and then recycling the waste oil, has a multi-stage treatment and circulating filtering structure, and is good in filtering effect and higher in product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of oil purification treatment, in particular to a waste oil high-purification rate treatment device. Background Art

[0002] Waste oil and miscellaneous oil (such as used engine oil) mainly come from the use process of mechanical equipment, automobiles, ships, etc. These waste oils usually contain various impurities, additive degradation products, and substances that may be harmful to the human body and the environment. Therefore, it is particularly important to effectively recycle and purify waste oil so that it can be reused, which can not only protect the environment but also enable the recycling and regeneration of resources.

[0003] The waste oil recovery and purification treatment system usually includes: (1) Purification treatment system: Deeply purify waste oil by physical, chemical, or biological methods. These methods include filtration, centrifugation, distillation, adsorption, acid-base neutralization, oxidation-reduction, biodegradation, etc. (2) Post-treatment system: Further treat the purified waste oil, such as dehydration, decolorization, deodorization, etc., to improve its quality and reuse value. (3) Filtration system: Remove some solid substances separated after treatment, such as granular impurities, precipitates, sludges, residual additives, and other waste residues. The filtration effect directly affects the quality of the final product oil and is a key step in the purification treatment.

[0004] In the existing waste oil purification technology, the purification treatment is carried out in the same device, which is not convenient to separately control the pressure and temperature of various treatment stages. The presence of multiple raw material components in the same device may also affect each other, resulting in a reduction in the purification treatment effect. In addition, the filtration of waste oil is only carried out through a single device for a single time, which cannot ensure the effective removal of all impurities and reduces the quality of the product oil. Summary of the Utility Model

[0005] To solve the problems existing in the prior art, the utility model provides a waste oil high-purification rate treatment device, which carries out the purification treatment in stages and effectively guarantees the purification treatment effect. It has a circulating filtration structure and can circulate and filter the waste oil until it meets the requirements, ensuring the quality of the product oil.

[0006] The technical solution adopted by the utility model is:

[0007] A waste oil high-purification rate treatment device includes a multi-stage treatment device, and the multi-stage treatment device is respectively connected with a circulating filtration device and a vacuum pump;

[0008] The multi-stage treatment device includes a degumming treatment tank, the outlet end of the degumming treatment tank is connected to the inlet end of a decolorization treatment tank through a pipeline, and a stirrer and a heating device are respectively installed on both the degumming treatment tank and the decolorization treatment tank;

[0009] A circulation discharge pipe is connected between the circulation filtration device and the multi-stage treatment device, and the pipeline between the inlet end of the circulation filtration device and the outlet end of the multi-stage treatment device and the circulation discharge pipe form a circulation structure.

[0010] Furthermore, the degumming treatment tank is connected with a first reaction raw material tank, and the decolorization treatment tank is connected with a second reaction raw material tank.

[0011] Furthermore, the degumming treatment tank is connected with a third gas absorption tank, a fourth one-way valve is connected between the third gas absorption tank and the degumming treatment tank, and the third gas absorption tank is connected with a vacuum pump through a pipeline.

[0012] Furthermore, the bottom of the degumming treatment tank is connected with a waste pool through a slag discharge pipe, and the inlet end of the degumming treatment tank is also connected with the outlet end of the raw material tank through a pipeline.

[0013] Furthermore, the top of the decolorization treatment tank is connected with the inlet end of a second condenser through a pipeline, the outlet end of the second condenser is connected with the inlet end of a second storage tank through a pipeline, the outlet end of the second storage tank is connected with the inlet end of a fourth gas absorption tank through a fifth one-way valve, and the fourth gas absorption tank is connected with a vacuum pump through a pipeline.

[0014] Furthermore, the circulation filtration device includes a filtration tank with an inlet end connected to the outlet end of the multi-stage treatment device. The outlet end of the filtration tank is communicated with the circulation discharge pipe through a pipeline and a valve, and the outlet end of the filtration tank is connected with the inlet end of a finished product tank through a pipeline.

[0015] Furthermore, a bag filter is connected between the inlet pipeline and the outlet pipeline of the filtration tank.

[0016] Furthermore, a slag discharge port is arranged at the bottom of the filtration tank, and a first pressure gauge is installed on the filtration tank.

[0017] Furthermore, the filtration tank is connected with an air pump through a pipeline. The air pump is connected with the multi-stage treatment device through a pipeline, and a second pressure gauge is installed on the pipeline between the air pump and the filtration tank and the multi-stage treatment device.

[0018] The beneficial effects of the present utility model are:

[0019] The multi-stage treatment device of the present utility model can perform targeted treatment on waste oil, including degumming, decolorization and other treatment equipment, enabling the waste oil to be added with raw materials such as degumming agents and decolorizing agents through multiple steps, and obtaining sufficient reaction, adsorption, precipitation and other treatment processes. Compared with the existing technology that performs multiple treatment processes in the same treatment equipment, the present utility model can separately control parameters such as equipment temperature and pressure, avoid the mutual influence of raw materials in the same equipment, greatly improve the treatment effect on waste oil, significantly increase the recycling and purification reuse rate of waste oil, have a better environmental protection effect, and significantly increase the renewable proportion of resources.

[0020] The circulating filtration device of the present utility model can, by setting a circulating discharge pipe, circulate the waste oil that fails to meet the requirements after the first filtration to the treatment equipment of the previous stage for re-treatment, and continue to be transported to the filtration tank for re-filtration, finally obtaining a pure product raw oil with a high purification rate, which can be directly used for subsequent utilization, enabling the waste oil treated by the device of the present utility model to obtain a significant and effective filtration effect, further improving the quality of the final product, and thus improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the overall process flow of the present utility model;

[0022] Figure 2 is a process flow structure diagram of the multi-stage treatment device of the present utility model;

[0023] Figure 3 is a process flow structure diagram of the circulating filtration device of the present utility model.

[0024] Reference Numerals:

[0025] 1 - raw material tank, 3 - multi-stage treatment device, 4 - circulating filtration device, 5 - finished product tank, 6 - vacuum pump, 7 - circulating water tank,

[0026] 31 - degumming treatment tank, 32 - decolorization treatment tank, 33 - oil pump, 34 - first reaction raw material tank, 35 - third gas absorption tank, 36 - fourth check valve, 37 - waste material pool, 38 - second condenser, 39 - second storage tank, 310 - fifth check valve, 311 - fourth gas absorption tank, 312 - second reaction raw material tank,

[0027] 41 - filtration tank, 42 - circulating discharge pipe, 43 - bag filter, 44 - slag discharge port, 45 - first pressure gauge, 46 - air pump, 47 - second pressure gauge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present utility model will be described in detail below with reference to the drawings and embodiments.

[0029] The waste oil high-purification rate treatment equipment of the present utility model is mainly used for purifying and filtering waste oil from mechanical equipment, automobiles, ships, etc. during use, and converting it into reusable renewable resources. Through multiple process treatment steps, the equipment can finally achieve efficient waste oil purification treatment. The specific implementation methods are as follows:

[0030] Please refer to Figure 1 , which is an implementation method of a waste oil high-purification rate treatment system of the present utility model. Among them, the waste oil raw material enters the multi-stage treatment system from the raw material tank 1 for degumming, decolorization and other treatments. After passing through the multi-stage treatment device 3 and meeting the qualified standards, the waste oil enters the circulation filtration device 4 to remove the waste residue through circulation filtration. Finally, the qualified product oil after filtration is transported to the finished product tank 5 for storage. The vacuum pump 6 provides an internal vacuum environment for the operation of the system equipment, and discharges the extracted gas into the circulation water tank 7 for absorption and emission.

[0031] It should be noted that for the pipelines used in the device of the present utility model, according to the relevant pipeline connections of chemical equipment in the prior art, corresponding valves for opening and closing the pipelines can be set on the pipelines. Those skilled in the art can select and set the types of valves according to the types of fluid media, temperature, pressure and actual working conditions in combination with the prior art. In the present utility model, no specific description will be made on the valve settings on these pipelines, and this description also applies to the subsequent specific implementation methods.

[0032] Please refer to Figure 2 , when the waste oil is transported from the raw material tank 1 to the degumming treatment tank 31 of the multi-stage treatment device 3 for degumming treatment, the reaction raw materials for degumming treatment are put into the degumming treatment tank 31 from the first reaction raw material tank 34. These reaction raw materials can select some degumming agents. For example, by using the strong oxidizing property of oxidants, the gum substances are oxidized and decomposed, or by using complexing agents to form stable complexes with metal ions in the gum substances, so as to separate them from the waste oil; after adding the raw materials required for degumming, it is heated to the temperature required for the degumming treatment reaction by a heating device. Preferably, an electromagnetic heating device can be set in the degumming reaction treatment tank, which is convenient for controlling the heating temperature and quickly reaching the temperature requirement. During the degumming treatment, the inside of the degumming treatment tank 31 is stirred by a stirrer to fully mix and degum the raw materials. The waste residue separated after degumming is discharged from the slag discharge port 44 at the bottom of the degumming treatment tank 31 to the waste material pool 37 for unified treatment, while the toxic, harmful and odorous gases volatilized during the degumming treatment process enter the third gas absorption tank 35 through the fourth one-way valve 36 at the top for absorption, and the third gas absorption tank 35 is connected to the vacuum pump 6 to discharge the harmless gas subsequently; a sampling port is also set on the degumming treatment tank 31 to sample and detect whether the treated waste oil meets the standards. After passing the detection, it is transported to the subsequent equipment;

[0033] The degummed waste oil that has passed the qualification treatment is transported from the degumming treatment tank 31 to the decolorization treatment tank 32 for decolorization treatment. The reaction raw materials for decolorization treatment are put into the decolorization treatment tank 32 from the second reaction raw material tank 312. The raw materials for decolorization treatment can select the following implementation schemes according to needs:

[0034] Strong oxidants such as benzoyl peroxide and hydrogen peroxide: These substances have strong oxidizing properties and can oxidize and decompose the pigment molecules in the waste oil, thus achieving the effect of decolorization;

[0035] Metal ion complexing agents: Metal ion complexing agents can combine with specific functional groups in pigment molecules to form stable complexes, thereby separating them from the waste oil. This method is particularly effective for removing certain specific types of pigments;

[0036] Chemical adsorbents: Chemical adsorbents can achieve more efficient decolorization by reacting with pigment molecules. These chemical adsorbents may contain specific functional groups or active sites that can have strong interactions with pigment molecules;

[0037] In the decolorization treatment, it is heated to the temperature required for the degumming treatment reaction by a heating device. Similarly, the heating device can preferably be an electromagnetic heating device installed in the decolorization reaction treatment tank, and the inside of the degumming treatment tank 31 is stirred thoroughly by a stirrer for full mixing and contact; Some mixtures of water vapor and other gases will be volatilized during the decolorization reaction, and this part of the substances also need to be further treated before being discharged. Therefore, the water is condensed by the second condenser 38 connected to the top of the decolorization treatment tank 32 and collected in the second storage tank 39 for later use, while the other gases enter the fourth gas absorption tank 311 through the fifth one-way valve 310 for harmless absorption, and then the remaining clean gas is discharged by the vacuum pump 6; The decolorization treatment tank 32 is also provided with the same sampling port as the degumming treatment tank 31, which is convenient for sampling and detecting the treated waste oil. After passing the detection, it enters the treatment of subsequent equipment.

[0038] Please refer to Figure 3, in this utility model, the waste oil that has passed through the multi-stage treatment device 3 and is qualified is transported to the circulating filtration device 4 through the oil pump 33 for filtration treatment. According to the filtration requirements, the filtration is carried out by the filtration tank 41 or the bag filter 43. As an alternative implementation, different filtration equipment can be selected according to the content of impurities such as waste residues in the treated waste oil. For example, a bag filter 43 or other filter can be connected to the circulating filtration device 4 in the system as an alternative to the filtration tank 41 to directly filter the waste oil. Similarly, filtration equipment such as the bag filter 43 can also be connected in a pipeline loop to the previous-stage treatment equipment to achieve circulating filtration. Thus, on the premise of ensuring the quality of the product oil, more efficient filtration equipment can be used to complete the filtration step, further improving the processing efficiency of the system of this utility model.

[0039] Limited by the filtration effect of the existing filtration equipment, the waste oil after one-time filtration may not meet the production requirements. To ensure the quality and purity of the product oil, this utility model circulates and transports the waste oil back to the multi-stage treatment device 3 through the circulating discharge pipe 42 or the pipeline at the outlet end of the filtration tank 41 for circulation, and then transports it to the circulating filtration device 4 again for filtration. For the internal filtration structure of the filtration tank 41, any one or more of a filter screen, a filter element, a filter cloth, or a plate-and-frame filtration mechanism can be selected for combination, or other filtration mechanisms can also be set, with the priority consideration being to ensure the filtration effect; a slag discharge port 44 is provided at the bottom of the filtration tank 41, and the filtered waste residue is discharged from the bottom slag discharge port 44. During the filtration process, the pressure of the device is monitored by the first pressure gauge 45 installed on the filtration tank 41.

[0040] The filtration tank 41 is connected to an air pump 46 through a pipeline, and the air pump 46 is also connected to the multi-stage treatment device 3 through a pipeline. The air pump 46 is provided here to provide power for the medium transportation of the entire system. In addition, an air compressor can also be selected as the transportation power; a second pressure gauge 47 is installed on the pipeline between the air pump 46 and the filtration tank 41 and the multi-stage treatment device 3 to monitor the pressure between the devices. The product oil obtained by the filtration treatment of this utility model has a higher purity and better quality compared to the treatment system of the existing technology because it can be circulated and filtered until the detection reaches the standard.

[0041] The above-described embodiments only represent the specific implementation manners of this utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of this utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of this utility model, several modifications and improvements can still be made, and these all belong to the protection scope of this utility model.

Claims

1. A waste oil high purification rate treatment equipment, characterized in that: It comprises a multi-stage processing device, wherein the multi-stage processing device is respectively connected to a circulation filtering device and a vacuum pump; The multi-stage treatment device comprises a degumming treatment tank, the outlet end of the degumming treatment tank is connected to the inlet end of the decoloring treatment tank through a pipeline, and the degumming treatment tank and the decoloring treatment tank are respectively equipped with a stirrer and a heating device; A circulation discharge pipe is connected between the circulation filtering device and the multi-stage treatment device, and a pipeline between the inlet end of the circulation filtering device and the outlet end of the multi-stage treatment device and the circulation discharge pipe form a circulation structure.

2. The high purification rate waste oil treatment equipment according to claim 1 is characterized in that: The degumming treatment tank is connected to a first reaction raw material tank, and the decolorization treatment tank is connected to a second reaction raw material tank.

3. The high purification rate waste oil treatment equipment according to claim 1 is characterized in that: The degumming treatment tank is connected to a third gas absorption tank, a fourth one-way valve is connected between the third gas absorption tank and the degumming treatment tank, and the third gas absorption tank is connected to a vacuum pump through a pipeline.

4. The high purification rate waste oil treatment equipment according to claim 1 is characterized in that: The bottom of the degumming treatment tank is connected to a waste pool through a slag discharge pipe, and the inlet end of the degumming treatment tank is also connected to the outlet end of the raw material tank through a pipeline.

5. The high purification rate waste oil treatment equipment according to claim 1 is characterized in that: The top of the decolorization tank is connected to the inlet end of the second condenser through a pipeline, the outlet end of the second condenser is connected to the inlet end of the second storage tank through a pipeline, the outlet end of the second storage tank is connected to the inlet end of the fourth gas absorption tank through a fifth one-way valve, and the fourth gas absorption tank is connected to a vacuum pump through a pipeline.

6. The high purification rate waste oil treatment equipment according to claim 1 is characterized in that: The circulating filtration device comprises a filter tank whose inlet end is connected to the outlet end of the multi-stage treatment device, the outlet end of the filter tank is connected to the circulating discharge pipe through a pipeline and a valve, and the outlet end of the filter tank is connected to the inlet end of the finished product tank through a pipeline.

7. The high purification rate waste oil treatment equipment according to claim 6, characterized in that: A bag filter is connected between the inlet end pipeline and the outlet end pipeline of the filter tank.

8. The waste oil high purification rate treatment equipment according to claim 6, characterized in that: A slag discharge port is arranged at the bottom of the filter tank, and a first pressure gauge is installed on the filter tank.

9. The high purification rate waste oil treatment equipment according to claim 6, characterized in that: The filter tank is connected to an air pump through a pipeline, and the air pump is connected to a multi-stage processing device through a pipeline. A second pressure gauge is installed on the pipeline between the air pump and the filter tank and the multi-stage processing device.

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