Catalytic slurry oil electric separation solid removal device

Abstract

The utility model relates to the technical field of catalytic slurry oil, in particular to an electric separation solid removal device for catalytic slurry oil, which comprises an electric separation filter device, a slurry oil feeding pipeline, a clarified oil pipeline, a backwashing oil feeding pipeline and a backwashing oil discharging pipeline are arranged on the electric separation filter device, and the slurry oil feeding pipeline is connected with a large catalytic slurry oil throwing pipeline of a catalytic device. A filter and a sampler I are sequentially arranged on the oil slurry feeding pipeline; the clarified oil pipeline is connected with a small catalytic slurry oil throwing pipeline, the small catalytic slurry oil throwing pipeline is connected with a marine fuel oil blending valve group, and a mass flow meter I and a sampler II are arranged on the clarified oil pipeline; the backwashing oil feeding pipeline is connected with a catalytic feeding pipe; the catalytic feeding pipe is connected with a catalytic device through a catalytic feeding oil tank; and the backwashing oil discharging pipeline is connected with a catalytic feeding oil tank. The device is simple in use process, small in occupied equipment and small in peripheral investment, and the production cost of the marine fuel oil is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to catalytic oil slurry technical field, specifically related to catalytic oil slurry electric separation desolidification device. BACKGROUND

[0002] As a heavy oil product in catalytic cracking process, catalytic oil slurry has been used as low-end fuel oil. In recent years, due to the global crude oil quality gradually tends to be heavy, poor, the quality of the raw material oil used in catalytic cracking process also gradually tends to be heavy, poor, resulting in the amount of slurry constantly increasing. Therefore, how to effectively use catalytic oil slurry to create more economic benefits for refining enterprises has a very important role.

[0003] With the continuous improvement of environmental protection requirements, the existing refinery processing mode and processing technology cannot meet the stringent requirement that the sulfur mass fraction of marine fuel oil cannot be greater than 0.1%, and using catalytic oil slurry as a blending component of low-sulfur marine fuel oil has become the current focus. Producing qualified low-sulfur marine fuel oil can provide clean fuel for ship navigation, implement the green and low-carbon development strategy, and also bring considerable economic benefits to enterprises.

[0004] CN114437797B discloses a production method of a marine fuel oil blending component, which uses catalytic cracking slurry as raw material and adopts fixed-bed hydrogenation process to make the raw material contact with a hydrogenation desulfurization catalyst for hydrogenation reaction to obtain hydrogenation product oil, and through fractionation, a marine fuel oil blending component is obtained. This method mainly uses the preparation of a hydrogenation desulfurization catalyst as the main technology, and the desulfurization rate of catalytic oil slurry can reach more than 80%, but the desulfurization process conditions are relatively high and the risk of introducing new catalyst impurities is very large.

[0005] CN110205160A discloses a process method for preparing marine fuel oil based on catalytic cracking oil slurry desolidification-hydrogenation, which mixes catalytic cracking oil slurry with a diluent, separates the deslag, and then distills to obtain desolidification oil slurry; and catalytically hydrogenates the desolidification oil slurry under the action of a catalyst with nickel oxide and molybdenum oxide as active components and alumina as a carrier. Although this method has certain effect on improving the quality of marine fuel oil and reducing the cost of blending marine fuel, the process method is complex, and the reaction temperature and pressure are relatively high.

[0006] Catalytic oil slurry contains a large amount of fine catalyst particles, and if the catalytic oil slurry directly enters the marine fuel oil blending valve group, it will affect the quality of the marine fuel oil, so desolidification is needed. The traditional mechanical filtration method has poor effectiveness and the filter element is not easy to regenerate. UTILITY MODEL CONTENT

[0007] The utility model wants to solve the technical problem, propose a kind of catalytic oil slurry electric separation desolidification device, use simple process, equipment occupies less, peripheral investment is less, the production cost of marine fuel oil is saved.

[0008] The catalytic oil slurry electric separation desolidification device, including electric separation filtering device, electric separation filtering device is equipped with oil slurry feed pipeline, clarified oil pipeline, backwash oil feed pipeline and backwash oil discharge pipeline, oil slurry feed pipeline connects the catalytic oil slurry big outer throw pipeline of catalytic device, filter and sampler one are sequentially equipped on oil slurry feed pipeline;Clarified oil pipeline connects catalytic oil slurry small outer throw pipeline, catalytic oil slurry small outer throw pipeline connects marine fuel oil blending valve group, mass flowmeter one and sampler two are equipped on clarified oil pipeline;Backwash oil feed pipeline connects catalytic feed pipe, and catalytic feed pipe is connected catalytic device by catalytic feed oil tank;Backwash oil discharge pipeline connects catalytic feed oil tank.

[0009] Preferably, catalytic oil slurry small outer throw pipeline is connected marine fuel oil blending valve group by heat exchanger.

[0010] Preferably, oil slurry feed pipeline is equipped with feed control valve.

[0011] Preferably, clarified oil pipeline is equipped with regulating valve.

[0012] Preferably, backwash oil feed pipeline is equipped with mass flowmeter two and flow control valve.

[0013] Preferably, electric separation filtering device is the electric separation device of American Labaer company.

[0014] Preferably, electric separation filtering device is equipped with separation module, and separation module is equipped with adsorption filler, and separation module is connected backwash oil feed pipeline, backwash oil discharge pipeline, nitrogen pipeline, diesel pipeline and oil return pipeline, and oil return pipeline is connected dirty oil line.

[0015] Valve can be set on pipeline according to control needs, and the on-off of valve is used to conveniently control the on-off of material in corresponding pipeline and adjust the flow of material.

[0016] Compared with prior art, the utility model has the advantages that:

[0017] 1, the device of the utility model simple process, equipment occupies less, peripheral investment is less, and will not produce influence to the original process of upstream and downstream of oil refinery, saves the production cost of marine fuel for refinery;

[0018] 2, directly using the feed oil of catalytic device as backwash oil to clean the filler in electric separation filtering device, and the clarified oil obtained after electric separation of catalytic oil slurry is used as the component of marine fuel, so that the yield is high, no extra waste is produced, and zero emission is realized.​ Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] In the diagram: 1. Electrostatic separation and filtration device; 2. Oil slurry feed line; 3. Clarified oil line; 4. Backwash oil feed line; 5. Backwash oil discharge line; 6. Filter; 7. Sampler 1; 8. Feed control valve; 9. Mass flow meter 1; 10. Sampler 2; 11. Oil return line; 12. Catalytic feed line; 13. Catalytic feed tank; 14. Mass flow meter 2; 15. Flow control valve; 16. Nitrogen line; 17. Diesel line. Detailed Implementation

[0021] The present invention will now be described clearly and completely with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the catalytic slurry electro-separation and desolidification device includes an electro-separation filtration device 1, which is manufactured by Labaer Corporation, USA. Electrostatic separation unit. The electrostatic separation and filtration unit 1 is equipped with an oil slurry feed line 2, a clarified oil line 3, a backwash oil feed line 4, and a backwash oil discharge line 5. The oil slurry feed line 2 is connected to the large external discharge line of the catalytic oil slurry of the catalytic unit. The oil slurry feed line 2 is equipped with a filter 6 and a sampler 7 in sequence. The clarified oil line 3 is connected to the small external discharge line of the catalytic oil slurry, which is connected to the marine fuel oil blending valve group. The clarified oil line 3 is equipped with a mass flow meter 9 and a sampler 10. The backwash oil feed line 4 is connected to the catalytic feed line 12, which is connected to the catalytic unit through the catalytic feed tank 13. The backwash oil discharge line 5 is connected to the catalytic feed tank 13.

[0023] The small external catalytic slurry pipeline is connected to the marine fuel oil blending valve group via a heat exchanger.

[0024] The oil slurry feed line 2 is equipped with a feed control valve 8.

[0025] A regulating valve is installed on the clarified oil pipeline 3.

[0026] The backwash oil feed line 4 is equipped with a mass flow meter 14 and a flow control valve 15.

[0027] The electro-separation filter device 1 is equipped with a separation module, which is equipped with adsorption packing. The separation module is connected to the backwash oil inlet pipeline 4, the backwash oil outlet pipeline 5, the nitrogen pipeline 16, the diesel pipeline 17, and the oil return pipeline 11. The oil return pipeline 11 is connected to the sludge oil line.

[0028] The FCC slurry 5.7 t / h from catalytic cracking unit, temperature 180-220℃, pressure 0.35-0.42 MPa, backwash oil flow 10-15 m 3 / h, catalyst particle content 3000 ppm. The working process is as follows:

[0029] The catalytic slurry is introduced from the catalytic device slurry large external throwing pipeline, and the small coke pieces contained in the catalytic slurry are filtered through the filter 6, and then the flow is controlled by the feed control valve 8 to 5.7 t / h, and then enters the electric separation filter device 1, i.e. The electric separation device, the catalytic slurry enters from the upper part of the separation module and is filtered out from the lower part, becomes filtered oil after separation, enters the catalytic slurry small external throwing pipeline after metering by the mass flow meter 9, and is used as a blending component of marine fuel oil after cooling by the heat exchanger and entering the marine fuel oil blending valve group to produce marine fuel oil. The sample 7 is arranged on the slurry feed pipeline 2 before the solid removal of the catalytic slurry, and the sample 10 is arranged on the clarified oil pipeline 3 after the solid removal, so that the solid content change of the slurry before and after the solid removal can be tested.

[0030] When When the electric separation skid reaches the cleaning condition, the backwash oil is the vacuum second line wax oil of the atmospheric and vacuum unit serving as the raw material of the catalytic unit, which is introduced from the outlet of the atmospheric and vacuum unit wax oil pump into the backwash oil feed pipeline 4 through the catalytic feed pipeline 12, and the flow is controlled by the flow control valve 15 to about 10 t / h after metering by the mass flow meter 14, and then enters The electric separation device, the catalytic slurry enters from the lower part of the separation module and is filtered out from the upper part to perform backwash, and enters the catalytic feed oil tank 13 through the backwash oil discharge pipeline 5 to be used as the raw material for generating slurry;

[0031] When the separation module needs to replace the adsorbing filler in the device, the nitrogen pipeline 16 uses nitrogen to press the oil stored in the device from the oil discharge pipeline 11 to the waste oil line for discharge, and the separation module is cut off to open the container for replacement. When the separation module is disabled, diesel oil is filled into the pipeline 17 for soaking.

[0032] In this embodiment, when the solid content of the catalytic slurry containing catalyst particles is 3000 ppm, the solid content of the catalytic slurry after solid removal is controlled to be 50-150 ppm. The removal rate of the catalyst particles in the catalytic slurry by the electric separation device is 95%.

Claims

1. A catalytic oil slurry electro-separation and desolidification device, characterized in that, The device includes an electro-separation filter (1), which is equipped with an oil slurry feed line (2), a clarified oil line (3), a backwash oil feed line (4), and a backwash oil discharge line (5). The oil slurry feed line (2) is connected to the large external discharge line of the catalytic oil slurry of the catalytic unit. The oil slurry feed line (2) is equipped with a filter (6) and a sampler (7) in sequence. The clarified oil line (3) is connected to the small external discharge line of the catalytic oil slurry. The small external discharge line of the catalytic oil slurry is connected to the marine fuel oil blending valve group. The clarified oil line (3) is equipped with a mass flow meter (9) and a sampler (10). The backwash oil feed line (4) is connected to the catalytic feed pipe (12). The catalytic feed pipe (12) is connected to the catalytic unit through the catalytic feed tank (13). The backwash oil discharge line (5) is connected to the catalytic feed tank (13).

2. The catalytic oil slurry electro-separation and desolidification device according to claim 1, characterized in that, The small external catalytic slurry pipeline is connected to the marine fuel oil blending valve group via a heat exchanger.

3. The catalytic oil slurry electro-separation and desolidification device according to claim 1, characterized in that, A feed control valve (8) is installed on the oil slurry feed pipeline (2).

4. The catalytic oil slurry electro-separation and desolidification device according to claim 1, characterized in that, A regulating valve is installed on the clarified oil pipeline (3).

5. The catalytic oil slurry electro-separation and desolidification device according to claim 1, characterized in that, The backwash oil feed line (4) is equipped with a mass flow meter (14) and a flow control valve (15).

6. The catalytic oil slurry electro-separation and desolidification device according to claim 1, characterized in that, The electro-separation filter device (1) is Electrolysis device.

7. The catalytic oil slurry electro-separation and desolidification device according to claim 1, characterized in that, The electro-separation filter device (1) is equipped with a separation module, which is equipped with adsorption packing. The separation module is connected to the backwash oil inlet pipeline (4), the backwash oil outlet pipeline (5), the nitrogen pipeline (16), the diesel pipeline (17), and the oil return pipeline (11). The oil return pipeline (11) is connected to the sludge oil line.

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