Desulfurizing agent sulfur capacity analysis device

Abstract

The utility model discloses a sulfur capacity analysis device for a desulfurizing agent. The device comprises an oxygen source (1), a sample adding funnel (2), a first water stop clamp (3), a second water stop clamp (4), a storage hose (5), a glass tube (6), a high-temperature-resistant rubber plug (7), a quartz tube (8), a heating furnace (9), a high-temperature-resistant rubber tube (10), a connecting tube (11), an absorption bottle (12), a rubber plug (13), a tail gas exhaust port (14), hydrogen peroxide absorption liquid (15), an absorption bottle bottom sand core (16), a quartz tube ventilation partition plate (17) and a quartz tube upper branch tube (18). The utility model provides a sulfur capacity analysis device for a desulfurizing agent. The device is simple and convenient to operate, high in analysis accuracy and capable of being continuously operated.

Description

Technical Field

[0001] The utility model relates to an analytical device for the sulfur content of a desulfurizing agent. Background Art

[0002] With the development of the transportation industry and the advancement of industrial mechanization, the use of lubricating oil is increasing, and so is the generation of waste lubricating oil. Waste lubricating oil hydrorefining has gradually become an important method for waste lubricating oil recovery and treatment. The hydrorefining process produces waste gas, the main component of which is hydrogen sulfide. Hydrogen sulfide is a colorless, highly toxic acidic gas that poses serious environmental and human hazards. Therefore, it must be absorbed and treated with solid desulfurizers such as iron oxide and zinc oxide before it can be discharged.

[0003] Current methods for analyzing the sulfur content of desulfurizers require placing the sample in a muffle furnace heated to 1000°C and ventilated with oxygen. This is inconvenient and dangerous, and the experimental results are not very accurate. Therefore, a simple and rapid analytical device for determining the sulfur content of desulfurizers is highly desirable. Summary of the Invention

[0004] Aiming at the inconvenience of existing desulfurization agent sulfur capacity analysis, the utility model provides a desulfurization agent sulfur capacity analysis device. The device maintains sealing during the experiment and has the characteristics of high reliability, fast analysis, simple operation, and continuous analysis for desulfurization agent sulfur capacity analysis.

[0005] The utility model is a desulfurizer sulfur capacity analysis device, which includes an oxygen source 1, a sample adding funnel 2, a water stopper 3, a water stopper 4, a storage hose 5, a glass tube 6, a high-temperature resistant rubber plug 7, a quartz tube 8, a heating furnace 9, a high-temperature resistant rubber hose 10, a connecting pipe 11, an absorption bottle 12, a rubber plug 13, an exhaust gas outlet 14, a hydrogen peroxide absorption liquid 15, a sand core 16 at the bottom of the absorption bottle, a quartz tube air permeable partition 17, and a quartz tube upper branch pipe 18.

[0006] The oxygen source 1 of the device is connected to the upper branch pipe 18 of the quartz tube; the sample adding funnel 2 is connected to the storage hose 5, and the water stop clamp 1 3 and the water stop clamp 2 4 are installed on the storage hose 5, and there is a certain distance between the water stop clamp 1 3 and the water stop clamp 2 4; the storage hose 5 is connected to the glass tube 6, and the glass tube 6 is connected to the quartz tube 8 through the high-temperature resistant rubber plug 7; the quartz tube 8 is in the heating furnace 9, and the quartz tube air-permeable partition 17 is located in the middle of the heating furnace 9; the quartz tube (8) is connected to the high-temperature resistant rubber hose (10), the high-temperature resistant rubber hose 10 is connected to the connecting pipe 11, and the connecting pipe 11 is connected to the sand core 16 at the bottom of the absorption bottle; the absorption bottle 12 is filled with hydrogen peroxide absorption liquid 15; the top of the absorption bottle 12 is sealed by the rubber plug 13, and the absorption bottle 12 is connected to the exhaust outlet 14.

[0007] This device, consisting of waterstop clamp 1 (3), waterstop clamp 2 (4), and storage hose (5), forms a desulfurizer storage and feeding device. Its primary function is to add and store the desulfurizer to be tested. This portion of the device allows for adding another sample to the storage hose (5) while another sample is being measured. It also allows for multiple additions to the same sample during testing, improving testing convenience and continuity.

[0008] The device's waterstop clamps 1 (3) and 2 (4) serve three functions: first, they form a storage area for the sample to be tested together with the storage hose 5; second, when adding the sample to the storage hose 5, waterstop clamp 1 (3) opens and waterstop clamp 2 (4) closes, preventing hot air from quartz tube 8 from escaping from the top and allowing for smooth sample addition; and third, when the sample to be tested is added from the storage hose 5 through the glass tube 6 and high-temperature-resistant rubber plug 7 to the quartz tube 8 for testing, waterstop clamp 1 (3) closes and waterstop clamp 2 (4) opens. After addition is complete, waterstop clamp 2 (4) closes again, preventing hot air from quartz tube 8 from escaping from the top and allowing for smooth sample addition. The combined use of waterstop clamps 1 (3) and 2 (4) not only improves safety during sample addition but also ensures the system's tightness, preventing the loss of sulfur dioxide gas and improving analysis accuracy.

[0009] The quartz tube permeable baffle 17, located in the middle of the quartz tube 8, must be located in the middle of the heating furnace 9 to ensure stable and uniform heating of the desulfurizer. Because the experimental temperature reaches 1000°C, the quartz tube permeable baffle 17 must be made of quartz and allow gas to pass through to ensure stable reaction of the desulfurizer sample at the quartz tube permeable baffle 17.

[0010] The hydrogen peroxide absorption liquid 15 in the absorption bottle 12 of the device absorbs sulfur dioxide from the gas passing through the connecting pipe 11 and oxidizes it to form sulfuric acid. After the desulfurizer reaction is complete, the hydrogen peroxide absorption liquid 15 is completely transferred and titrated with sodium hydroxide solution to analyze the sulfur content of the desulfurizer. The accuracy of the analysis can be improved for desulfurizers with different sulfur contents by adjusting the oxygen flow rate of the oxygen source 1 and the hydrogen peroxide concentration of the hydrogen peroxide absorption liquid 15. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model.

[0012] Figure 1 1 is the oxygen source, 2 is the sample adding funnel, 3 is the water stopper one, 4 is the water stopper two, 5 is the storage hose, 6 is the glass tube, 7 is the high temperature resistant rubber stopper, 8 is the quartz tube, 9 is the heating furnace, 10 is the high temperature resistant rubber hose, 11 is the connecting pipe, 12 is the absorption bottle, 13 is the rubber stopper, 14 is the exhaust outlet, 15 is the hydrogen peroxide absorption liquid, 16 is the sand core at the bottom of the absorption bottle, 17 is the air permeable partition of the quartz tube, and 18 is the upper branch pipe of the quartz tube. DETAILED DESCRIPTION

[0013] The present invention will be described in detail below with reference to the accompanying drawings and embodiments, but these embodiments do not limit the essence and scope of the present invention in any way. Example 1

[0014] A desulfurizer sulfur content analyzer comprises an oxygen source 1, a sample addition funnel 2, a water stopper 3, a water stopper 4, a storage hose 5, a glass tube 6, a high-temperature resistant rubber stopper 7, a quartz tube 8, a heating furnace 9, a high-temperature resistant rubber hose 10, a connecting pipe 11, an absorption bottle 12, a rubber stopper 13, an exhaust outlet 14, a hydrogen peroxide absorption solution 15, a sand core 16 at the bottom of the absorption bottle, a quartz tube air-permeable baffle 17, and an upper branch pipe 18. Oxygen enters the quartz tube 8 from the oxygen source 1 through the upper branch pipe 18. Due to the closure of water stopper 4, oxygen flows through the high-temperature resistant rubber hose 10 and connecting pipe 11, forming bubbles from the sand core 16 at the bottom of the absorption bottle. After being absorbed by the hydrogen peroxide absorption solution 15, the oxygen is discharged from the exhaust outlet 14. When the oxygen flow rate stabilizes, the heating furnace 9 begins heating. While keeping water stopper 4 closed, open water stopper 3 to add the sample to be tested to the storage hose 5 through the sample addition funnel 2 for storage. After addition is complete, close water stop clamp 1 (3). Once the reaction temperature in quartz tube 8 is reached, keep water stop clamp 1 (3) closed and open water stop clamp 2 (4). The sample in storage hose 5 is passed through glass tube 6 into quartz tube 8. Glass tube 6 is connected to quartz tube 8 via a high-temperature-resistant rubber stopper 7. The sample remains at the quartz tube's permeable baffle 17 for combustion. The sulfur dioxide produced by the combustion reaction flows through high-temperature-resistant rubber hose 10, connected to quartz tube 8, and connecting tube 11 connected to high-temperature-resistant rubber hose 10, into sand core 16 at the bottom of the absorption bottle, forming bubbles that are absorbed in hydrogen peroxide absorption liquid 15. Unabsorbed gas, sealed at the top of absorption bottle 12 by rubber stopper 13, is discharged through exhaust outlet 14. After the sample has fully reacted, the hydrogen peroxide absorption liquid 15 is completely transferred, and the inner wall of absorption bottle 12 is cleaned multiple times. The absorption liquid and all washing solutions are pooled and titrated with sodium hydroxide solution to analyze the sulfur content of the desulfurizer.

Claims

1. A desulfurizing agent sulfur capacity analysis device, characterized in that: The sulfur capacity analysis device mainly comprises: an oxygen source (1), a sample addition funnel (2), a water stopper clamp (1) (3), a water stopper clamp (2) (4), a storage hose (5), a glass tube (6), a high temperature resistant rubber plug (7), a quartz tube (8), a heating furnace (9), a high temperature resistant rubber hose (10), a connecting pipe (11), an absorption bottle (12), a rubber plug (13), an exhaust outlet (14), a hydrogen peroxide absorption liquid (15), a sand core at the bottom of the absorption bottle (16), a quartz tube air permeable partition (17) and an upper branch pipe (18) of the quartz tube; the sample addition funnel (2) is connected to the storage hose (5), the storage hose (5) is connected to the glass tube (6), the glass tube (6) is connected to the quartz tube (8), the quartz tube (8) is connected to the high temperature resistant rubber hose (10), the high temperature resistant rubber hose (10) is connected to the connecting pipe (11), the connecting pipe (11) is connected to the absorption bottle (12), and the absorption bottle (12) is connected to the exhaust outlet (14).

2. The desulfurizing agent sulfur capacity analysis device according to claim 1, characterized in that: The oxygen source (1) is connected to the upper branch pipe (18) of the quartz tube; the sample addition funnel (2) is connected to the storage hose (5), and the water stop clamp 1 (3) and the water stop clamp 2 (4) are installed on the storage hose (5); the storage hose (5) is connected to the glass tube (6), and the glass tube (6) is connected to the quartz tube (8) through the high-temperature resistant rubber plug (7); the quartz tube (8) is in the heating furnace (9), and the quartz tube air-permeable partition (17) is located in the middle of the heating furnace (9); the quartz tube (8) is connected to the high-temperature resistant rubber hose (10), and the high-temperature resistant rubber hose (10) is connected to the connecting pipe (11), and the connecting pipe (11) is connected to the sand core (16) at the bottom of the absorption bottle; the absorption bottle (12) is filled with hydrogen peroxide absorption liquid (15); the top of the absorption bottle (12) is sealed by the rubber plug (13), and the absorption bottle (12) is connected to the exhaust outlet (14).

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