Molten slag discharging device for salt-containing waste liquid incinerator

Abstract

The utility model provides a molten slag discharging device for a salt-containing waste liquid incinerator. The molten slag discharging device comprises a slag discharging hot blast stove and a waste slag treatment device which are arranged in series, the deslagging hot-blast stove is arranged at the lower part of the ash bin of the salt-containing waste liquid incinerator; the deslagging hot blast stove comprises a stove body and a heating burner arranged on one side of the stove body. According to the slag discharging hot blast stove, molten-state inorganic salt falling into the ash bin of the salt-containing waste liquid incinerator is discharged in a molten state all the time, the problems that molten-state waste slag is cooled and caked around the slag outlet of the ash bin of the incinerator and blocks the slag outlet are solved, the continuous operation time of the salt-containing waste liquid incineration system is prolonged, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of slag discharge devices, in particular to a molten slag discharge device for a salt-containing waste liquid incinerator. Background Art

[0002] In the traditional process of incineration treatment of salt-containing waste liquid, due to the complex composition and high melting point of inorganic salts, it is easy for molten inorganic salts to condense on the furnace wall, or remain in the ash hopper and form lumps that are difficult to fall off, or even enter the subsequent process section with the flue gas to clog equipment, resulting in the system being unable to operate continuously and stably.

[0003] The current existing technology can only meet the problem of incineration of salt-containing waste liquid, but it requires regular cleaning of inorganic salts in the equipment, which makes the system unable to operate stably for a long time. A large amount of manpower is required to clean the inorganic salts in the equipment, which not only increases labor costs, but also increases many unsafe factors during operation.

[0004] CN101629722A discloses a fluidized bed incineration process and incineration device for pesticide waste residue. This process first feeds the pesticide waste residue into the incineration device for incineration at a temperature of 900-950°C and a pressure of -100--200 Pa; then, the flue gas is fed into a waste heat boiler for heat exchange; the cooled flue gas is brought into contact with water, and residual HCl and Cl2 in the flue gas are absorbed by the lye. The incineration device includes a fluidized bed incinerator body, with an explosion-proof door and an ammonia spray gun above the dilute phase incineration zone; an air distribution plate is provided at the bottom of the dense phase incineration zone, the lower part of the air distribution plate is a wind chamber, and a slag discharge pipe is provided at the bottom end; the top of the incinerator body is connected to the upper part of the cyclone separator, the top of the central tube of the cyclone separator is connected to the top of the tail flue, and the bottom is connected to the dense phase incineration zone of the incinerator body via a return feeder.

[0005] CN206626582U discloses a low-salt waste liquid incineration and waste heat recovery device, including an incinerator and a waste heat recovery pipe, the waste heat recovery pipe is connected to the flue gas outlet of the incinerator, a slag outlet is provided at the bottom end of the incinerator, the slag outlet is connected to an anti-blocking structure, a slag channel is provided inside the anti-blocking structure, the bottom end outlet of the slag channel is connected to a slag water tank, and the slag water tank is equipped with a slag scooping machine. The waste heat recovery pipe is connected to the flue gas outlet of the incinerator to recover heat to the waste heat boiler. In addition, the slag outlet at the bottom end of the incinerator is connected to the anti-blocking structure to prevent the slag outlet from being blocked by the solid matter after combustion due to the formation of salt bridges, etc., thereby improving the efficiency and cost of waste slag recovery.

[0006] CN209431411U discloses a high-temperature melting and purification device suitable for salt-containing solid waste. The salt-containing solid waste is fed into the kiln through a conveying device from the feed port. The organic matter in the salt-containing solid waste is gasified and decomposed at high temperatures, and the gaseous matter is transported through a transition section to the regenerator for heat exchange. When the first regenerator is exchanging heat with cold air, the air supply switching valve opens toward the first regenerator, allowing the blower to deliver cold air into the first regenerator. The heated air is then fed into the kiln through the air duct. At this point, the flue gas switching valve and the induced draft switching valve open toward the second regenerator, allowing high-temperature flue gas to enter the second regenerator through the transition section and be delivered to the induced draft fan inlet through the induced draft switching valve. After 30-45 minutes, the flue gas has released heat, the second regenerator has heated up, and the air has heated up, allowing the first regenerator to cool down and release heat. Conversely, the first regenerator has heated up and stored heat, while the second regenerator has cooled and released heat.

[0007] However, the above device still has the problem that the molten waste slag condenses around the slag outlet, is difficult to clean, and blocks the slag outlet. Utility Model Content

[0008] In view of the problems existing in the prior art, the utility model provides a molten slag discharge device for a salt-containing waste liquid incinerator. By arranging a slag discharge hot air furnace at the lower part of the ash bin of the salt-containing waste liquid incinerator, the molten inorganic salt falling into the ash bin of the salt-containing waste liquid incinerator is discharged in a molten state all the time, solving the problem of molten waste slag cooling and agglomerating around the slag outlet and clogging the slag outlet, thereby extending the continuous operation time of the salt-containing waste liquid incineration system and the service life of the equipment.

[0009] To achieve this purpose, the present invention adopts the following technical solutions:

[0010] The utility model provides a molten slag discharge device for a salt-containing waste liquid incinerator, wherein the molten slag discharge device comprises a slag discharge hot blast furnace and a waste slag treatment device which are arranged in series; the slag discharge hot blast furnace is arranged at the lower part of the ash bin of the salt-containing waste liquid incinerator; the slag discharge hot blast furnace comprises a furnace body and a heating burner arranged on one side of the furnace body.

[0011] The molten slag discharge device for a salt-containing waste liquid incinerator described in the utility model is arranged at the lower part of the ash bin of the salt-containing waste liquid incinerator. By heating the burner to generate high-temperature flue gas of about 1100°C, the molten inorganic salt falling into the ash bin of the salt-containing waste liquid incinerator remains in a molten state and falls into the waste slag treatment device without condensing and adhering to the wall of the incinerator. There is no need for regular manual cleaning, which reduces the risk of manual operation. The entire salt-containing waste liquid incineration system can operate stably for a long time.

[0012] Preferably, the slag discharge hot blast furnace further includes a flame detector and a fire viewing hole arranged on the furnace body.

[0013] Preferably, the slag discharge hot blast furnace further includes a slag discharge inspection door arranged on the opposite side of the heating burner.

[0014] Preferably, the slag discharge inspection door is provided with a first temperature measuring device for detecting the temperature of the molten slag to ensure that the waste slag passing through the slag discharge hot blast furnace remains in a molten state and is discharged smoothly.

[0015] Preferably, a guide device is also provided inside the slag discharge hot blast furnace, so that the high-temperature flue gas generated by the slag discharge hot blast furnace and the molten slag falling from the ash bin of the salt-containing waste liquid incinerator can convect here, and rapidly exchange heat, so that the temperature of the molten slag is maintained at about 1000°C, ensuring the fluidity of the molten slag and enabling the molten slag to flow smoothly into the waste slag treatment device.

[0016] Preferably, the slag outlet of the guide device is a reduced diameter outlet and is suspended in the air, which can effectively ensure that the molten slag drips directly into the waste slag treatment device after passing through the guide device, and will not stick to the outlet of the slag discharge hot blast furnace. It can effectively prevent the inorganic salt molten slag from clogging the slag outlet, thereby extending the stable operation time of the entire salt-containing waste liquid incineration system.

[0017] Preferably, an exhaust device is provided at the lower end of the slag outlet to extract part of the high-temperature hot flue gas generated by the slag discharge hot blast furnace to a subsequent device, thereby realizing the reuse of the flue gas from the slag discharge hot blast furnace.

[0018] Preferably, the air extraction device is provided with a regulating valve and a second temperature measuring device.

[0019] The utility model can adjust the temperature of the slag discharge hot blast furnace outlet and the waste slag treatment device by adjusting the regulating valve provided on the exhaust device, thereby ensuring that the entire slag outlet area is in a high temperature state, further ensuring the fluidity of the molten slag, and preventing it from cooling and solidifying on the slag outlet.

[0020] Preferably, the slag discharge hot blast furnace is a detachable structure, which is convenient for dismantling, cleaning and maintenance.

[0021] Preferably, the waste slag treatment device includes a heat-resistant slag bin or a dual-axis conveying cooler.

[0022] The double-shaft conveying cooler of the utility model can quickly cool the molten slag that falls into the slag and process it into waste slag with uniform particles and a size not exceeding 10 mm, which is convenient for conveying and packaging the waste slag.

[0023] Preferably, the heat-resistant slag bin comprises a slag bin body and a quick-release flange and an observation hole arranged on the side of the slag bin body.

[0024] Preferably, the interior of the slag bin body is lined with a refractory material.

[0025] Preferably, movable casters are provided at the bottom of the slag bin body.

[0026] Preferably, the heat-resistant slag bin is a detachable structure, which is convenient for dismantling, cleaning and maintenance.

[0027] The method for using the molten slag discharge device for a salt-containing waste liquid incinerator of the utility model comprises the following steps:

[0028] (1) The incineration furnace is kept at 1100℃ under negative pressure. The organic matter in the salty waste liquid is completely decomposed, and the sodium salt melts into molten inorganic salt under high temperature. Under the action of airflow, part of it falls into the ash bin of the salty waste liquid incinerator, and a very small part of small particles enters the rear end quenching tower with the flue gas;

[0029] (2) The molten inorganic salts that fall into the ash bin of the salt-containing waste liquid incinerator further fall into the slag discharge hot air furnace. Under the action of the flue gas generated by the heating burner, they continue to remain in a molten state, pass through the guide device and the slag outlet in turn, and finally fall into the waste slag treatment device.

[0030] Compared with the prior art, the present invention has at least the following beneficial effects:

[0031] (1) The molten slag discharge device for a salt-containing waste liquid incinerator provided by the utility model adopts a slag discharge hot air furnace, so that the molten inorganic salt waste slag is discharged smoothly without condensing and adhering to the incinerator wall, thereby greatly extending the stable operation time of the entire salt-containing waste liquid incineration system;

[0032] (2) The molten slag discharge device for the salt-containing waste liquid incinerator provided by the utility model does not require regular manual cleaning, which greatly extends the cleaning and maintenance period and reduces the danger of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the arrangement of the ash bin, slag discharge hot air furnace and waste slag treatment device of the salt-containing waste liquid incinerator in a specific embodiment of the present invention.

[0034] Figure 2 It is a front view of the slag discharge hot blast furnace in a specific embodiment of the present utility model.

[0035] Figure 3 It is a top view of the slag discharge hot blast furnace in a specific embodiment of the present utility model.

[0036] Figure 4 It is a cross-sectional view of a slag discharge hot blast furnace in a specific embodiment of the present invention.

[0037] Figure 5 It is a front view of the heat-resistant slag bin in a specific embodiment of the present utility model.

[0038] In the figure: 1-slag discharge hot air furnace; 2-waste slag treatment device; 3-ash silo of salt-containing waste liquid incinerator; 4-heating burner; 5-flame detector; 6-fire viewing hole; 7-slag discharge inspection door; 8-first temperature measuring device; 9-flow guide device; 10-exhaust port; 11-exhaust device; 12-second temperature measuring device; 13-quick-release flange; 14-observation hole; 15-movable casters. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0040] The following is a further detailed description of the present invention. However, the following examples are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

[0041] It should be understood that, in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0042] It should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0043] Those skilled in the art should understand that the present invention must include necessary pipelines, conventional valves and general pump equipment for realizing a complete process, but the above content does not belong to the main utility model points of the present invention. Those skilled in the art can add layouts on their own based on the process flow and equipment structure selection, and the present invention does not make special requirements and specific limitations on this.

[0044] As a specific embodiment of the present invention, a molten slag discharge device for a salt-containing waste liquid incinerator is provided, wherein the molten slag discharge device comprises a slag discharge hot air furnace 1 and a waste slag treatment device 2 arranged in series; the slag discharge hot air furnace 1 is arranged at the lower part of the ash bin 3 of the salt-containing waste liquid incinerator, as shown in the schematic diagram. Figure 1 shown.

[0045] The main view of the slag discharge hot blast furnace 1 is as follows Figure 2 As shown, the top view is Figure 3 As shown, the cross-sectional view is Figure 4 shown.

[0046] The slag removal hot blast furnace 1 includes a furnace body and a heating burner 4 arranged on one side of the furnace body.

[0047] The slag discharge hot blast furnace further includes a flame detector 5 and a fire viewing hole 6 arranged on the furnace body.

[0048] The slag discharge hot blast furnace further includes a slag discharge inspection door 7 provided on the opposite side of the heating burner 4;

[0049] The slag discharge inspection door 7 is provided with a first temperature measuring device 8 .

[0050] The deslagging hot blast furnace is further provided with a flow guide device 9. The deslagging outlet of the flow guide device 9 is a reduced diameter outlet and is suspended in the air.

[0051] The lower end of the slag discharge hot blast furnace 1 is provided with an air extraction port 10 ; the air extraction port 10 is connected to an air extraction device 11 ; the air extraction device 11 is provided with a regulating valve and a second temperature measuring device 12 .

[0052] The slag discharge hot blast furnace 1 is a detachable structure.

[0053] The waste residue treatment device 2 includes a heat-resistant residue bin or a double-axis conveying cooler.

[0054] The main view of the heat-resistant slag bin is as follows Figure 5 shown.

[0055] The heat-resistant slag bin includes a slag bin body and a quick-release flange 13 and an observation hole 14 provided on the side of the slag bin body; the interior of the slag bin body is provided with a refractory lining;

[0056] The bottom of the slag bin body is provided with movable casters 15.

[0057] The heat-resistant slag bin is a detachable structure.

[0058] As a specific embodiment of the present invention, a method for using the molten slag discharge device for a salt-containing waste liquid incinerator is also provided, comprising the following steps:

[0059] (1) The incineration furnace is kept at 1100℃ under negative pressure. The organic matter in the salty waste liquid is completely decomposed, and the sodium salt melts into molten inorganic salt under high temperature. Under the action of airflow, part of it falls into the ash bin 3 of the salty waste liquid incinerator, and a very small part of small particles enters the rear end quenching tower with the flue gas;

[0060] (2) The molten inorganic salts falling into the ash bin 3 of the salt-containing waste liquid incinerator further fall into the slag discharge hot blast furnace 1, and continue to remain in a molten state under the action of the flue gas generated by the heating burner 4, and pass through the guide device 9 and the slag outlet in turn, and finally fall into the waste slag treatment device 2.

[0061] To sum up, the molten slag discharge device for the salt-containing waste liquid incinerator provided by the utility model has a reasonable structural design. By adopting a slag discharge hot air furnace, the molten inorganic salt waste slag can be discharged smoothly and will not condense and adhere to the incinerator wall, thereby greatly extending the stable operation time of the entire salt-containing waste liquid incineration system; and there is no need for regular manual cleaning, which reduces the operation and maintenance costs of the salt-containing waste liquid incineration system.

[0062] The applicant declares that while the above-described embodiments illustrate the detailed structural features of the present invention, the present invention is not limited to these detailed structural features, nor does it imply that the present invention must rely on these detailed structural features in order to be implemented. Persons skilled in the art should understand that any improvements to the present invention, equivalent replacements for selected components, additions of auxiliary components, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

[0063] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

Claims

1. A molten slag discharge device for a salt-containing waste liquid incinerator, characterized in that: The molten slag discharge device includes a slag discharge hot blast furnace and a waste slag treatment device arranged in series; the slag discharge hot blast furnace is arranged at the lower part of the ash bin of the salt-containing waste liquid incinerator; the slag discharge hot blast furnace includes a furnace body and a heating burner arranged on one side of the furnace body.

2. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 1, characterized in that: The slag discharge hot blast furnace further comprises a flame detector and a fire viewing hole arranged on the furnace body.

3. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 1, characterized in that: The slag discharge hot blast furnace further includes a slag discharge inspection door provided on the opposite side of the heating burner; The slag discharge inspection door is provided with a first temperature measuring device.

4. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 1, characterized in that: A flow guide device is also provided inside the slag discharge hot blast furnace.

5. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 4, characterized in that: The slag outlet of the diversion device is a reduced diameter outlet and is suspended in the air.

6. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 5, characterized in that: The lower end of the slag discharge hot blast furnace is provided with an air extraction port; The air extraction port is connected to the air extraction device; The air extraction device is provided with a regulating valve and a second temperature measuring device.

7. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 1, characterized in that: The slag discharge hot blast furnace is a detachable structure.

8. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 1, characterized in that: The waste slag processing device includes a heat-resistant slag bin or a double-axis conveying cooler.

9. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 8, characterized in that: The heat-resistant slag bin includes a slag bin body and a quick-release flange and an observation hole arranged on the side of the slag bin body; The interior of the slag bin body is provided with a refractory lining; The bottom of the slag bin body is provided with movable casters.

10. The molten slag discharge device for a salt-containing waste liquid incinerator according to claim 8, characterized in that: The heat-resistant slag bin is a detachable structure.

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