A slag discharge device for the bottom of a slurry evaporation furnace

Abstract

The utility model provides a slag discharge device for the bottom of a slurry evaporation furnace, comprising a water jet device, a neutralization beating tank, a screw conveying filter press, a filtrate tank, a filtrate delivery pump and a slag tank, one side of the water jet device is connected to the slag discharge port at the bottom of the slurry evaporation furnace through a slag discharge pipeline, the other side of the water jet device is connected to the neutralization beating tank, the neutralization beating tank is connected to the screw conveying filter press, the screw conveying filter press is connected to the filtrate tank and the slag tank, and the filtrate tank is connected to the wastewater system through the filtrate delivery pump. The utility model can realize sealed slag discharge for the dried slurry slag, and implement online recycling treatment to ensure the continuous and stable operation of the slurry evaporation furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy and chemical industry, in particular to a slag discharge device for the bottom of a slurry evaporation furnace. Background Art

[0002] The slurry evaporation device is an essential link for the recovery and treatment of impurities generated in the molten salt chlorination-titanium tetrachloride refining process. Due to the constraints of the slag discharge device, the actual production adopts an open tank-type manual direct discharge method, which is prone to problems such as uncontrolled smoke, dust overflow, high temperature burns, and high labor intensity for employees; in the process of removing vanadium from organic matter to produce refined titanium tetrachloride, the slurry slag will burn and have open flames when it comes into contact with the air, and there is no fixed slurry slag receiving device. With the slurry slag as a secondary resource for vanadium recovery, a large amount of slurry slag is brought into the waste gas treatment system during the existing slag discharge operation, resulting in a reduced recovery rate, which is not conducive to the efficient recovery of slurry slag resources.

[0003] In order to achieve safe and efficient recycling of slurry slag, the utility model designs a slag discharge device for the bottom of a slurry evaporation furnace from the aspects of slag discharge airtightness, online processing, process equipment, etc. The device has a simple structure, a reasonable design, and online processing. The device can be used to achieve sealed slag discharge for the slurry slag dried by the slurry evaporation furnace, and online recycling processing can be implemented, thereby ensuring the continuous and stable operation of the slurry evaporation furnace. Utility Model Content

[0004] In accordance with the above technical problems, a slag discharge device for the bottom of a slurry evaporation furnace is provided.

[0005] The technical means adopted by the utility model are as follows:

[0006] A slag discharge device for the bottom of a slurry evaporation furnace comprises: a hydraulic jet device, a neutralization pulping tank, a screw conveying filter press, a filtrate tank, a filtrate delivery pump and a slag tank, wherein one side of the hydraulic jet device is connected to a slag discharge port at the bottom of the slurry evaporation furnace through a slag discharge pipeline, the other side of the hydraulic jet device is connected to the neutralization pulping tank, the neutralization pulping tank is connected to the screw conveying filter press, the screw conveying filter press is connected to the filtrate tank and the slag tank, and the filtrate tank is connected to a wastewater system through a filtrate delivery pump.

[0007] Furthermore, it also includes a closed slag discharge valve, which is installed on the slag discharge pipeline.

[0008] Furthermore, the airtight slag discharge valve is a airtight pneumatic valve.

[0009] Furthermore, the neutralization pulping tank is connected to a pulping tank pump, and the pulping tank pump is connected to the water jet device through a pipeline.

[0010] Furthermore, an agitator is arranged above the neutralization and pulping tank.

[0011] Furthermore, a horizontal pump is provided at the bottom of the neutralization and pulping tank, and the horizontal pump is connected to a screw conveying filter press.

[0012] Furthermore, the filtrate tank is connected to the neutralization and pulping tank via a delivery pump.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model takes into consideration aspects such as slag discharge airtightness, online processing, and process equipment, realizes sealed slag discharge for the dried slurry slag, and implements online recycling processing to ensure the continuous and stable operation of the slurry evaporation furnace.

[0015] 2. The utility model has a simple structure and is designed according to the actual situation on site. The device can realize the sealed discharge of the slurry slag in the slurry evaporation furnace out of the furnace, perform pulping treatment online, recover the vanadium-containing slag, avoid the slurry slag from being in contact with the air for a long time to produce open flames, and cause the production environment to be uncontrolled, while ensuring continuous production.

[0016] 3. The utility model discharges the evaporated residue into the neutralization pulping tank through the closed residue discharge valve, and transports the alkali solution to the water jet device through the pulping tank pump, forming a downward suction force in the pipeline to achieve rapid neutralization of the evaporated residue and the alkali solution, and accelerates the complete mixing of the evaporated residue and the alkali solution through stirring above the neutralization pulping tank to form a slurry, which is convenient for further recovery and treatment of the residue.

[0017] 4. The utility model evaporated residue is fully mixed with alkali solution in the neutralization pulping tank, and the neutralized material is transported from the bottom of the neutralization pulping tank to the screw conveying filter press by a horizontal pump, so as to realize solid-liquid separation of the neutralized residue slurry.

[0018] 5. The slurry neutralized in the neutralization pulping tank of the utility model is transported to the screw conveying filter press, and the neutralized slag is filtered into a cake shape by the filter press equipment and discharged into the slag tank for recovery. The filtered clear liquid enters the filtrate tank, and the spent alkali liquid is transported to the wastewater system for treatment by the filtrate delivery pump.

[0019] 6. The alkali solution recovered in the filtrate tank of the utility model can be transported to the neutralization and pulping tank for recycling.

[0020] Based on the above reasons, the utility model can be widely promoted in the fields of metallurgy and chemical industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 The utility model is a schematic diagram of a slag discharge device for the bottom of a slurry evaporation furnace.

[0023] In the figure: 1. Closed slag discharge valve; 2. Hydraulic injection device; 3. Neutralization pulping tank; 4. Screw conveying filter press; 5. Filtrate tank; 6. Filtrate conveying pump; 7. Slag tank; 8. Wastewater system. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a slag discharge device for the bottom of a slurry evaporation furnace. The utility model takes into account the slag discharge airtightness, online processing, process equipment and other aspects, realizes sealed slag discharge for the dried slurry slag, and implements online recycling processing to ensure the continuous and stable operation of the slurry evaporation furnace.

[0026] The utility model slag discharge device is designed to solve the problem that after the solid and liquid impurities generated in the process of producing refined titanium tetrachloride by removing vanadium from organic matter are evaporated and dried in the slurry evaporator, a large amount of dust and solid impurities are discharged through the bottom of the slurry evaporator. This device can realize online automatic treatment and recovery of vanadium-containing slurry slag.

[0027] Reference Figure 1 The utility model is a slag discharge device for the bottom of a slurry evaporation furnace, which aims to solve the problem that after the solid and liquid impurities produced in the process of removing vanadium from organic matter to produce refined titanium tetrachloride are evaporated and dried in the slurry evaporation furnace, a large amount of dust and solid impurities are discharged through the bottom of the slurry evaporation furnace. This device can realize the closed slag discharge of the slurry evaporation furnace, online treatment of slurry slag, and recovery.

[0028] The utility model slag discharge device comprises a closed slag discharge valve 1, a hydraulic injection device 2, a neutralization pulping tank 3, a screw conveying filter press 4, a filtrate tank 5, a filtrate delivery pump 6, a slag tank 7 and other equipment. The slag discharge device of the slurry evaporation furnace is connected to the slag discharge port at the bottom of the slurry evaporation furnace, and is connected to the bottom slag discharge pipeline by a closed slag discharge valve 1 (closed slag discharge semi-ball valve); a hydraulic injection device 2 is arranged below the closed slag discharge valve 1, and the alkali solution is transported to the hydraulic injection device 2 (the existing injection device structure can be adopted) through the pulping tank pump (corrosion-resistant and wear-resistant slag slurry pump) of the neutralization pulping tank 3, forming a downward suction in the pipeline; an agitator is arranged above the neutralization pulping tank 3 to mix the slurry slag and alkali solution in the tank; and a A horizontal pump is used to transport the neutralized slag liquid to a screw conveying filter press 4 (the existing structural form can be adopted to achieve solid-liquid separation), and the neutralized slag is separated from the liquid by belt conveying and filtration; the screw conveying filter press 4 filters the mixed neutralized slag into a slag cake through the filter press, and the slag cake is discharged to the recovery slag tank 7, and the liquid is discharged to the filtrate tank 5. If the filtrate is not ineffective, it can be transported to the neutralization pulping tank 3 for reuse, and the waste alkali liquid after ineffectiveness is transported to the waste salt system (wastewater system 8) for treatment, which can effectively solve the slag discharge and recovery problems of slurry slag.

[0029] In this embodiment, the slurry evaporation furnace slag discharge device is connected to the slag discharge port at the bottom of the slurry evaporation furnace, and is connected to the bottom slag discharge pipe by a closed pneumatic valve (closed slag discharge valve 1), which can realize remote automatic control operation (the remote automatic control operation can be realized by existing technology) to discharge the dried residue in the slurry furnace into the neutralization pulping tank 3.

[0030] In this embodiment, the evaporated residue is discharged into the neutralization pulping tank 3 through the closed residue discharge valve 1, the neutralization pulping tank submersible pump (pulping tank pump) is started, and the alkali solution is transported to the water injection device 2 through the pulping tank pump, forming a downward suction force in the pipeline to achieve rapid neutralization of the evaporated residue and the alkali solution. At this time, the stirring above the neutralization pulping tank 3 is started to accelerate the complete mixing of the evaporated residue and the alkali solution to form a slurry, which is convenient for further recovery and treatment of the residue.

[0031] In this embodiment, the evaporated residue is fully mixed with the alkali solution in the neutralization pulping tank 3, and the neutralized material is transported from the bottom of the neutralization pulping tank 3 to the screw conveying filter press 4 through a slurry pump (horizontal pump) to achieve solid-liquid separation of the neutralized slurry.

[0032] In this embodiment, the slurry neutralized in the neutralization pulping tank 3 is transported to the screw conveyor filter press 4, and the neutralized slag is filtered into a cake shape by the filter press equipment and discharged into the slag tank 7 for recovery. The filtered clear liquid enters the filtrate tank 5, and the spent alkali liquid is transported to the wastewater system 8 for treatment by the filtrate delivery pump 6.

[0033] In this embodiment, the alkali solution recovered in the filtrate tank 5 can be transported to the neutralization and pulping tank 3 for recycling.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A slag removal device for the bottom of a slurry evaporation furnace, characterized in that: include: A water jet device (2), a neutralization and beating tank (3), a screw conveying filter press (4), a filtrate tank (5), a filtrate delivery pump (6) and a slag tank (7), wherein one side of the water jet device (2) is connected to a slag discharge port at the bottom of a slurry evaporation furnace via a slag discharge pipeline, and the other side of the water jet device (2) is connected to the neutralization and beating tank (3), the neutralization and beating tank (3) is connected to the screw conveying filter press (4), the screw conveying filter press (4) is connected to the filtrate tank (5) and the slag tank (7), and the filtrate tank (5) is connected to a wastewater system (8) via a filtrate delivery pump (6).

2. The slag discharge device for the bottom of a slurry evaporation furnace according to claim 1, characterized in that: It also comprises a closed slag discharge valve (1), wherein the closed slag discharge valve (1) is installed on the slag discharge pipeline.

3. The slag discharge device for the bottom of a slurry evaporation furnace according to claim 2, characterized in that: The airtight slag discharge valve (1) is a airtight pneumatic valve.

4. The slag discharge device for the bottom of a slurry evaporation furnace according to claim 1, characterized in that: The neutralization pulping tank (3) is connected to a pulping tank pump, and the pulping tank pump is connected to the water jet device (2) through a pipeline.

5. The slag discharge device for the bottom of a slurry evaporation furnace according to claim 1, characterized in that: A stirrer is arranged above the neutralization and beating tank (3).

6. The slag discharge device for the bottom of a slurry evaporation furnace according to claim 1, characterized in that: A horizontal pump is provided at the bottom of the neutralization and pulping tank (3), and the horizontal pump is connected to a screw conveying filter press (4).

7. The slag discharge device for the bottom of a slurry evaporation furnace according to claim 1, characterized in that: The filtrate tank (5) is connected to the neutralization and pulping tank (3) via a delivery pump.

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