Molten salt discharging device, incinerator and production line

Abstract

The utility model discloses a molten salt discharging device, an incinerator and a production line, and the molten salt discharging device comprises a molten salt inlet used for inputting molten salt; one end of the liquid seal structure is in butt joint with the molten salt inlet, the liquid seal structure comprises a liquid seal runner, and liquid seal is achieved between one end of the liquid seal runner and the molten salt inlet through molten salt; the heating component interface is arranged on the liquid sealing structure and is used for maintaining the state of the molten salt; one end of the discharging structure is in butt joint with the other end of the liquid sealing structure, and the other end of the discharging structure is used for discharging molten salt. The molten salt in the liquid seal runner is prevented from being solidified through the heating component connector, the liquid seal isolates external air and flue gas in the furnace, the situation that cold air leaks into a hearth to cool the molten salt, the molten salt is solidified and hardened to block the salt outlet is avoided, meanwhile, the liquid seal isolates the flue gas in the furnace, and therefore the situation that acid flue gas enters a salt discharging system to corrode equipment and pipelines is avoided; due to the design of liquid seal, the adaptability of the system to various working conditions is improved, and long-term stable operation of the system can be guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of incinerators, and particularly to a molten salt discharging device, an incinerator and a production line. Background Art

[0002] During the incineration of salt-containing waste, molten salt with a temperature of about 900°C to 1100°C will accumulate at the bottom of the incinerator and form a molten salt pool. When the high-temperature molten salt is discharged, it will solidify and agglomerate when encountering cold, blocking the outlet.

[0003] To prevent the outlet from being blocked, in some related technologies, manual cleaning is adopted, that is, workers are arranged to timely remove the solidified salt at the salt discharging outlet to ensure the smoothness of the outlet; however, the reliability and safety of manual cleaning are very low, because the amount and composition of the waste processed by the incinerator at different times generally change, and at the same time, affected by the high temperature, the production amount, composition and flow state of the molten salt will also change accordingly, resulting in the change and unpredictability of the solidification method, speed, etc. of the molten salt at the outlet. Therefore, it is very difficult for manual labor to clean timely, accurately and thoroughly, and the solidified salt is very hard, once formed, it is extremely difficult to remove manually.

[0004] There are also related technologies that install a salt discharging valve at the salt discharging outlet and a burner at the top of the salt discharging valve, and maintain a high temperature at the salt discharging place by heating to prevent the salt from solidifying. The disadvantage is that it has strict requirements for operating conditions and is easily affected by system fluctuations, resulting in the blockage of the salt outlet. In addition, the forms of salt discharging valves are similar. The commonly used salt discharging valve is like a "cross" four-way. One side of the horizontal channel is connected to the salt discharging outlet of the incinerator, and the other side is installed with a hydraulic piston valve core (some do not install the valve core and instead use it as an observation hole or a maintenance hole). The vertical channel is installed with a burner on the upper side and connected to the lower salt pipe on the lower side. The design of the salt discharging valve is based on the fact that the pressure at the discharging end is lower than the pressure inside the furnace to ensure that the flue gas (part of the flue gas inside the furnace and the flue gas generated by the salt discharging burner) flows from inside the furnace to the outside, and the high temperature of the flue gas is used to prevent the molten salt from solidifying and ensure smooth salt discharging. However, this kind of operating condition requirement is strict, and it is very difficult to always maintain a relative pressure difference in actual operation.

[0005] Among them, the main reasons for the difficulty in always maintaining a relative pressure difference are:

[0006] 1) The pressure inside the furnace fluctuates greatly due to deflagration and other reasons;

[0007] 2) The high-temperature flue gas discharged with the molten salt causes downstream equipment, pipelines, etc. to leak air due to over-temperature damage;

[0008] 3) The acidic flue gas discharged from the incinerator corrodes and damages the equipment, pipelines, etc. downstream of the salt discharging valve after cooling;

[0009] 4) The pressure maintaining equipment or instrument of the system fails, etc.; all of the above reasons will cause the pressure balance to be destroyed, resulting in the reverse flow of gas into the furnace, that is, the external cold air flows into the incinerator through the salt discharge port, thus causing the molten salt to solidify and block the salt outlet.

[0010] Therefore, none of these methods can well solve the problem of molten salt solidification and caking. Often, due to the negligence of personnel, the salt outlet is not cleaned in time, resulting in blockage, or due to the change of the working conditions of the incineration system, the cold air flows reversely through the salt outlet, resulting in blockage. Summary of the Invention

[0011] The purpose of the present application is to solve at least one of the technical problems existing in the prior art. For this reason, the present application proposes a molten salt discharging device, which can improve the adaptability to various working conditions and ensure long-term stable operation.

[0012] The present application also proposes an incinerator including the above-mentioned molten salt discharging device.

[0013] The present application also proposes a production line including the above-mentioned incinerator.

[0014] The molten salt discharging device according to the embodiment of the first aspect of the present application includes:

[0015] A molten salt inlet for inputting molten salt;

[0016] A liquid seal structure, one end of the liquid seal structure is docked with the molten salt inlet, the liquid seal structure includes a liquid seal flow channel, and one end of the liquid seal flow channel and the molten salt inlet are liquid-sealed by molten salt;

[0017] A heating component interface is arranged on the liquid seal structure, and the heating component interface is used for inputting high temperature to maintain the state of the molten salt;

[0018] A discharging structure, one end of the discharging structure is docked with the other end of the liquid seal structure, and the other end of the discharging structure is used for discharging molten salt.

[0019] The molten salt discharging device according to the embodiment of the first aspect of the present application has at least the following beneficial effects: by the heating component interface, the molten salt in the liquid seal flow channel is prevented from solidifying, and the external air and the flue gas in the furnace are isolated by the liquid seal, avoiding the leakage of cold air into the furnace to cool the molten salt, resulting in the solidification and caking of the molten salt and blocking the salt outlet. At the same time, the liquid seal also isolates the flue gas in the furnace, thus avoiding the acidic flue gas from entering the salt discharging system and corroding the equipment and pipelines. The design of the liquid seal improves the adaptability of the system to various working conditions and can ensure the long-term stable operation of the system.

[0020] The molten salt discharging device according to the embodiment of the first aspect of the present application, the liquid seal structure includes a liquid seal partition plate and a liquid seal ramp plate. The liquid seal partition plate is located above the liquid seal ramp plate. The liquid seal ramp plate includes a horizontal section and an inclined section. The horizontal section and the liquid seal partition plate enclose one end of the liquid seal flow channel and are used to dock with the molten salt inlet. The inclined section is adjacent to the horizontal section and extends in the upward inclined direction. The inclined section and the liquid seal partition plate enclose the other end of the liquid seal flow channel.

[0021] The molten salt discharging device according to the embodiment of the first aspect of the present application, the liquid seal partition plate and the liquid seal ramp plate are made of refractory materials.

[0022] The molten salt discharging device according to the embodiment of the first aspect of the present application, the liquid seal structure further includes a heating chamber. One end of the heating chamber is docked with the other end of the liquid seal flow channel. The other end of the heating chamber is docked with one end of the discharging structure. The heating component interface is arranged in the heating chamber and is used to input high temperature to heat the molten salt flowing through the heating chamber.

[0023] The molten salt discharging device according to the embodiment of the first aspect of the present application, one end of the heating component interface is used to connect a burner, and the other end of the heating component interface extends into the heating chamber.

[0024] The molten salt discharging device according to the embodiment of the first aspect of the present application, the discharging structure includes a discharging channel. One end of the discharging channel is used to dock with the heating chamber, and the other end of the discharging channel is provided with a salt discharging port.

[0025] The molten salt discharging device according to the embodiment of the first aspect of the present application, the discharging structure includes a first guiding structure and a second guiding structure. The first guiding structure is arranged between the heating chamber and the discharging channel, and the second guiding structure is arranged between the discharging channel and the salt discharging port.

[0026] The molten salt discharging device according to the embodiment of the first aspect of the present application, the salt discharging port is used to connect a salt discharging pipe or a molten salt receiving tank.

[0027] The incinerator according to the embodiment of the second aspect of the present application includes: the molten salt discharging device according to the embodiment of the first aspect of the present application.

[0028] The production line according to the embodiment of the third aspect of the present application includes: the incinerator according to the embodiment of the second aspect of the present application.

[0029] It is not difficult to understand that the incinerator in the second - aspect embodiment of the present application and the production line in the third - aspect embodiment of the present application both have the technical effects of the molten - salt discharging device in the first - aspect embodiment as described above, so they will not be elaborated herein.

[0030] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present application will be further described below in conjunction with the drawings and embodiments;

[0032] Figure 1 It is a schematic structural diagram of an embodiment of the present application.

[0033] Reference Signs:

[0034] 100, molten - salt inlet;

[0035] 200, liquid - seal structure; 210, liquid - seal flow channel; 220, liquid - seal partition; 230, liquid - seal ramp plate; 231, horizontal section; 232, inclined section; 240, heating chamber;

[0036] 300, heating - component interface;

[0037] 400, discharging structure; 410, discharging channel; 420, lower - salt opening; 430, first diversion structure; 440, second diversion structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application.

[0039] In the description of the present application, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

[0040] In the description of the present application, the meaning of "a number of" is one or more, the meaning of "a plurality of" is at least two, "greater than", "less than", "exceeding", etc. are understood not to include the recited number, and "above", "below", "within", etc. are understood to include the recited number. If "first" and "second" are described, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0041] In the description of the present application, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above terms in the present application after combining with the specific content of the technical solution.

[0042] Referring to Figure 1 , the molten salt discharging device according to the first aspect embodiment of the present application is applied to the discharging of molten salt in an incinerator. The molten salt discharging device includes a molten salt inlet 100, a liquid seal structure 200, a heating component interface 300, and a discharging structure 400.

[0043] Among them, the molten salt inlet 100 is used to input molten salt; one end of the liquid seal structure 200 is docked with the molten salt inlet 100. The liquid seal structure 200 includes a liquid seal flow channel 210. One end of the liquid seal flow channel 210 and the molten salt inlet 100 are liquid-sealed through molten salt; the heating component interface 300 is arranged on the liquid seal structure 200, and the heating component interface 300 is used to input high temperature to maintain the state of molten salt; one end of the discharging structure 400 is docked with the other end of the liquid seal structure 200, and the other end of the discharging structure 400 is used to discharge molten salt.

[0044] It can be understood that the molten salt in the molten salt pool enters the liquid seal structure 200 through the molten salt inlet 100, and the liquid seal flow channel 210 is filled with molten salt, so that neither external air nor flue gas in the furnace can pass through, playing a role of liquid seal. At the same time, the heating component interface 300 is used to maintain a sufficient high temperature in the heating chamber 240, and the generated high-temperature flue gas can only flow towards the discharging structure 400, ensuring the temperature of the entire salt discharging system, ensuring that the molten salt in the system does not solidify, and thus achieving stable salt discharging.

[0045] In some embodiments, the molten salt discharging device includes a mounting plate, and the molten salt inlet 100 is formed on the mounting plate. To ensure the sealing performance of the liquid seal flow channel 210, one end of the liquid seal flow channel 210 is smaller than the molten salt inlet 100, thereby achieving reliable liquid seal. Among them, the heating component interface 300 is arranged relatively far from one end of the liquid seal flow channel 210, so that the molten salt after flowing a certain distance can still avoid solidification and caking under the action of high temperature.

[0046] Referring to Figure 1, the molten salt discharging device according to the embodiment of the first aspect of the present application prevents the molten salt in the liquid seal flow channel 210 from solidifying through the heating component interface 300, isolates the external air and the furnace flue gas through the liquid seal, avoids cold air leaking into the furnace chamber to cool the molten salt, resulting in the solidification and caking of the molten salt and blocking the salt outlet. At the same time, the liquid seal also isolates the furnace flue gas, thereby preventing acidic flue gas from entering the salt discharging system and corroding the equipment and pipelines. The design of the liquid seal improves the adaptability of the system to various working conditions and can ensure the long-term stable operation of the system.

[0047] In some embodiments of the present application, the liquid seal structure 200 includes a liquid seal partition plate 220 and a liquid seal ramp plate 230. The liquid seal partition plate 220 is located above the liquid seal ramp plate 230. The liquid seal ramp plate 230 includes a horizontal section 231 and an inclined section 232. The horizontal section 231 and the liquid seal partition plate 220 enclose one end of the liquid seal flow channel 210 and are used to dock with the molten salt inlet 100. The inclined section 232 is adjacent to the horizontal section 231 and extends in the inclined upward direction. The inclined section 232 and the liquid seal partition plate 220 enclose the other end of the liquid seal flow channel 210. It can be understood that the liquid seal partition plate 220 is arranged above the liquid seal ramp plate 230, and cooperates with the structure of the liquid seal ramp plate 230 to form a horizontal liquid seal flow channel 210 and an inclined liquid seal flow channel 210. Among them, the horizontal liquid seal flow channel 210 is used to dock with the molten salt inlet 100 and play a role in liquid seal. The inclined liquid seal flow channel 210 is used to ensure the smooth flow of the liquid to maintain the liquid seal effect.

[0048] In some embodiments, the liquid seal partition plate 220 and the liquid seal ramp plate 230 are made of refractory materials. It can be understood that the refractory materials play a role in heat insulation and preventing molten salt erosion, enabling the liquid seal structure 200 to adapt to high-temperature environments.

[0049] In some embodiments of the present application, the liquid seal structure 200 further includes a heating chamber 240. One end of the heating chamber 240 is docked with the other end of the liquid seal flow channel 210, and the other end of the heating chamber 240 is docked with one end of the discharging structure 400. The heating component interface 300 is arranged in the heating chamber 240 and is used to input high temperature to heat the molten salt flowing through the heating chamber 240. It can be understood that the heating chamber 240 is used to heat up the molten salt, so that the molten salt can flow more easily to the discharging structure 400 and be discharged after passing through the heating chamber 240, ensuring the continuous operation of the entire device. In some embodiments, one end of the heating component interface 300 is used to connect a burner, and the other end of the heating component interface 300 extends into the heating chamber 240, and a small-power burner is used to maintain a sufficient high temperature in the heating chamber 240.

[0050] In some embodiments of the present application, the discharge structure 400 includes a discharge channel 410. One end of the discharge channel 410 is used to dock with the heating chamber 240, and a salt discharge port 420 is provided at the other end of the discharge channel 410. It can be understood that the liquid seal partition plate 220 and the liquid seal ramp plate 230 are used to enclose the liquid seal flow channel 210 and the heating chamber 240. Along the flow direction of the molten salt, the molten salt inlet 100, the liquid seal flow channel 210, the heating chamber 240, and the discharge channel 410 are arranged in sequence, so that the layout is reasonable and the system stability is improved. In some embodiments, the salt discharge port 420 is used to connect to a salt discharge pipe or a molten salt receiving tank, thereby facilitating the setting of the incinerator and the layout of the production line.

[0051] In some embodiments, the discharge structure 400 includes a first diversion structure 430 and a second diversion structure 440. The first diversion structure 430 is arranged between the heating chamber 240 and the discharge channel 410, and the second diversion structure 440 is arranged between the discharge channel 410 and the salt discharge port 420. It can be understood that the first diversion structure 430 includes a diversion conical surface that gradually constricts from the liquid seal flow channel 210 to the heating chamber 240 direction, so that the molten salt can be smoothly discharged. The second diversion structure 440 includes a diversion conical surface that gradually expands from the discharge channel 410 to the salt discharge port 420 direction, thereby increasing the caliber of the salt discharge port 420, improving the processing efficiency, and facilitating the connection with the salt discharge pipe or the molten salt receiving tank.

[0052] It can be understood that the liquid seal partition plate 220 and the liquid seal ramp plate 230 are used for liquid seal to isolate the gas inside and outside the incinerator; the specific structure of the heating chamber 240 and the burner interface is adopted to ensure a reasonable temperature distribution in the heating chamber 240 and not damage the refractory material. Through the internal and external isolation setting method, the two sides do not affect each other, improving the adaptability and stability of the system; in addition, the acidic flue gas in the furnace does not enter the salt discharge system, avoiding the acid corrosion of the equipment and pipelines in the salt discharge system; there is only the flue gas generated by the burner in the salt discharge system, and the total amount of flue gas is stable and controllable, and a large amount of high-temperature flue gas will not be discharged to the salt discharge system due to the fluctuation of the furnace conditions, causing the system to overheat or even overheat and damage the equipment pipelines.

[0053] Referring to Figure 1 , for the incinerator according to the second aspect embodiment of the present application, the incinerator can be an incinerator for various solid, liquid, and gaseous industrial hazardous waste or a flue gas pollution control device. The incinerator includes the molten salt discharge device according to the first aspect embodiment of the present application. This device is designed as a closed system, automatically discharges molten salt, and does not require manual operation; the liquid seal is designed to isolate the external air and the flue gas in the furnace, avoiding the leakage of cold air into the furnace chamber to cool the molten salt and cause the molten salt to solidify and block the salt discharge port. At the same time, the liquid seal also isolates the flue gas in the furnace, thereby avoiding the entry of acidic flue gas into the salt discharge system and corroding the equipment and pipelines. The design of the liquid seal improves the adaptability of the system to various working conditions and can ensure the long-term stable operation of the system.

[0054] Referring to Figure 1 , the production line according to the third aspect embodiment of the present application may be a production line for treating various solid, liquid, and gaseous industrial hazardous wastes. The production line includes the incinerator according to the second aspect embodiment of the present application, which can efficiently perform waste treatment.

[0055] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0056] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present application within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A molten salt discharge device, characterized in that: include: A molten salt inlet, used for inputting molten salt; A liquid sealing structure, one end of which is connected to the molten salt inlet, and the liquid sealing structure comprises a liquid sealing flow channel, and a liquid seal is achieved between one end of the liquid sealing flow channel and the molten salt inlet through molten salt; A heating component interface, disposed on the liquid sealing structure, the heating component interface being used to input high temperature to maintain the state of the molten salt; A discharge structure, one end of which is butted against the other end of the liquid sealing structure, and the other end of the discharge structure is used for discharging molten salt.

2. The molten salt discharge device according to claim 1, characterized in that: The liquid seal structure includes a liquid seal partition and a liquid seal ramp plate, wherein the liquid seal partition is located above the liquid seal ramp plate, and the liquid seal ramp plate includes a horizontal section and an inclined section, wherein the horizontal section and the liquid seal partition form one end of the liquid seal flow channel and are used to dock with the molten salt inlet, and the inclined section is arranged adjacent to the horizontal section and extends in an inclined upward direction, and the inclined section and the liquid seal partition form the other end of the liquid seal flow channel.

3. The molten salt discharge device according to claim 2, characterized in that: The liquid-sealed partition plate and the liquid-sealed ramp plate are made of refractory material.

4. The molten salt discharge device according to claim 2, characterized in that: The liquid seal structure also includes a heating chamber, one end of which is connected to the other end of the liquid seal flow channel, and the other end of the heating chamber is connected to one end of the discharge structure. The heating component interface is arranged in the heating chamber and is used to input high temperature to heat the molten salt flowing through the heating chamber.

5. The molten salt discharge device according to claim 4, characterized in that: One end of the heating component interface is used to connect to the burner, and the other end of the heating component interface extends into the heating chamber.

6. The molten salt discharge device according to claim 4, characterized in that: The discharge structure comprises a discharge channel, one end of which is used to dock with the heating chamber, and the other end of which is provided with a salt outlet.

7. The molten salt discharge device according to claim 6, characterized in that: The discharge structure comprises a first flow guiding structure and a second flow guiding structure, wherein the first flow guiding structure is arranged between the heating chamber and the discharge channel, and the second flow guiding structure is arranged between the discharge channel and the lower salt outlet.

8. The molten salt discharge device according to claim 6, characterized in that: The lower salt port is used to connect to the lower salt pipe or the molten salt receiving tank.

9. An incinerator, characterized in that: include: The molten salt discharge device according to any one of claims 1 to 8.

10. A production line, characterized in that: include: The incinerator as claimed in claim 9.

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