Hazardous waste drying treatment device

Abstract

The utility model belongs to the technical field of hazardous waste treatment, and particularly discloses a hazardous waste drying treatment device which comprises a secondary combustion chamber and a rotary kiln, an outer door and an inner door which are matched for use are arranged on the secondary combustion chamber, a tray is arranged on the inner wall of the outer door, and a feeding hopper which is matched with the tray for use is arranged on one side of the secondary combustion chamber. The hazardous waste drying treatment device has the advantages that efficient hazardous waste drying treatment is achieved, and due to the fact that the water content and the harmful substance content of hazardous waste are reduced to certain values, treated materials can serve as raw materials for subsequent precious metal refining and other treatment processes; and 2, safe hazardous waste drying treatment is realized, and an outer door, an inner door and a tray structure are reasonably arranged, so that on one hand, high-temperature gas in the secondary combustion chamber cannot be communicated with the outside to avoid safety accidents caused by overflow of the high-temperature gas, and on the other hand, the situation that external air flows into the secondary combustion chamber to cause temperature reduction and increase of fuel consumption can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the dangerous waste treatment technical field, concretely relates to a dangerous waste drying treatment device. BACKGROUND

[0002] With the high speed development of world industrialization and city economy, the generation of dangerous waste also increases sharply, which causes serious harm to human body, soil, water and the like. The treatment technology of dangerous waste is a problem to be solved at present, if the dangerous waste treatment process is improper, not only the effect is poor, but also serious secondary pollution is caused easily.

[0003] The treatment of dangerous waste refers to the process of decomposing the harmful substances to human body or environment in dangerous waste into harmless components or transforming into the chemical form with less toxicity through one or more physical and chemical means. The basic principle of the dangerous waste pollution prevention and control technology policy is the reduction, resource utilization and harmlessness of dangerous waste.

[0004] And for the dangerous waste with high water content and high toxicity, there is high value precious metal in the waste, the precious metal can be recycled, at present, there is no good treatment method. Due to the high water content and the existence of toxic components such as hydrogen fluoride, the toxic components are easy to escape in the drying process, causing environmental pollution, and even causing life safety accidents.

[0005] Therefore, the dangerous waste treatment industry needs to improve and technically innovate the drying process of the dangerous waste with high water content and high toxicity, reduce the treatment cost, and at the same time, it is beneficial to the subsequent recycling of high value precious metal, and creates considerable economic benefits.

[0006] Based on the above problems, the utility model provides a dangerous waste drying treatment device. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a dangerous waste drying treatment device, which solves the problems of high drying treatment cost and environmental pollution of the dangerous waste with high water content and high toxicity.

[0008] Technical scheme: the utility model provides a dangerous waste drying treatment device, which comprises two combustion chambers and a rotary kiln, the two combustion chambers are provided with an outer door and an inner door matched with each other, the inner wall of the outer door is provided with a tray, and one side of the two combustion chambers is provided with a feeding hopper matched with the tray.

[0009] The feeding hopper is used for conveying materials to the tray, and the outer door and the inner door realize sealing in different opening states respectively, and the inner door is opened when the outer door is closed.

[0010] The utility model discloses a dangerous waste drying treatment device's working method, the utility model discloses a kind of dangerous waste drying treatment device, including upper hopper, tray, outer door, inner door and two combustion chambers, upper hopper is connected with the upper end of tray, and tray is connected with the lower end of outer door, and outer door is connected with the lower end of inner door, and inner door is connected with the lower end of two combustion chambers.

[0011] The working method of the dangerous waste drying treatment device includes the following steps: Step 1, open the outer door, and the inner door is closed at this time; Step 2, start the upper hopper to transport the material to the tray; Step 3, close the outer door, and the inner door is opened at this time, and the tray rotates in the two combustion chambers at this time; Step 4, after the material is dried, open the outer door, and the inner door is closed at this time, and the tray rotates out of the two combustion chambers to take out the treated material on the tray, and then start the upper hopper to reload the material to be treated in the tray, and then repeat the above process.

[0012] In the step 3, the material in the tray is in contact with the high-temperature gas flow in the two combustion chambers, and the moisture and volatile gas in the material gradually separate from the material and flow out of the two combustion chambers with the high-temperature gas flow, and the material is subjected to subsequent harmfulness reduction treatment in the two combustion chambers.

[0013] Compared with the prior art, the dangerous waste drying treatment device has the following advantages: 1. The drying treatment device realizes efficient drying treatment of dangerous waste. Since the water content and harmful substance content of the material are reduced to a certain value, the treated material can be used as raw material for subsequent precious metal extraction and other treatment processes; 2. The drying treatment device realizes safe drying treatment of dangerous waste. The outer door, the inner door, and the tray structure are reasonably arranged. On the one hand, the high-temperature gas in the two combustion chambers cannot communicate with the outside, so as to prevent the high-temperature gas from overflowing and causing a safety accident. On the other hand, the outside air cannot flow into the two combustion chambers, so as to prevent the temperature from being reduced and the fuel consumption from being increased. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without creating labor.

[0015] Figure 1 It is a structure diagram of the dangerous waste drying treatment device of the utility model;

[0016] In the drawings, the reference numbers are as follows: 1-upper hopper, 2-tray, 3-outer door, 4-inner door, 5-two combustion chambers, and 6-rotary kiln. DETAILED DESCRIPTION

[0017] Clearly and completely describe the technical scheme in the embodiments of the utility model in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, but not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the range of protection of the utility model.

[0018] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "intermediate position", "interior", "top end", "bottom end" and the like is the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0019] The utility model will be further clarified in combination with the drawings and specific embodiments.

[0020] As Figure 1 The dangerous waste drying treatment device shown in the figure, including two combustion chamber 5 and rotary kiln 6,

[0021] Two combustion chamber 5 are provided with outer door 3, inner door 4 of cooperation,

[0022] The inner wall of outer door 3 is provided with tray 2,

[0023] One side of two combustion chamber 5 is provided with feeding hopper 1 for cooperation with tray 2.

[0024] In addition, preferably feeding hopper 1 is used to deliver material to tray 2; outer door 3, inner door 4 realize sealing respectively in different opening states, when outer door 3 is closed, inner door 4 is opened.

[0025] Embodiment

[0026] As Figure 1The working method of the dangerous waste drying treatment device is as follows: high water content and high toxicity dangerous waste is fed into the tray 2 through the feeding hopper 1, and the feeding hopper 1 stops feeding when the waste reaches a certain amount. The outer door 3 is opened, and the tray 2 rotates into the secondary combustion chamber 5. At the same time, the inner door 4 is opened, and the outer door 3 is closed.

[0027] The dangerous waste in the secondary combustion chamber 5 contacts with the high-temperature gas flow in the secondary combustion chamber, and the water and volatile gas in the dangerous waste are gradually separated from the dangerous waste and flow out of the secondary combustion chamber 5 with the high-temperature gas flow in the secondary combustion chamber 5, so that the dangerous waste is dried and the volatile harmful gas is reduced.

[0028] When the dangerous waste is dried to a certain degree and the volatile harmful gas is reduced to a certain content, the inner door 4 is closed, the outer door 3 is opened, the treated waste on the tray 2 is taken out, and the waste to be treated is reloaded on the tray 2, and then the above process is repeated.

[0029] The waste treated by the drying treatment device has a certain water content and harmful substance content, and the treated waste can be used as raw material for subsequent precious metal extraction and other treatment processes.

[0030] When the outer door 3 is in an open state, the inner door 4 cannot be opened, so as to ensure that the high-temperature gas flow in the secondary combustion chamber 5 does not overflow and cause a safety accident during the loading and unloading of the waste by the operator.

[0031] The inner door 4 can only be opened after the outer door 3 is closed, and when the inner door 4 is in an open state, the outer door 3 cannot be opened, so as to ensure that the high-temperature gas in the secondary combustion chamber 5 does not communicate with the outside, so as to prevent the high-temperature gas from overflowing and causing a safety accident, and also to prevent the outside air from flowing into the secondary combustion chamber 5 and causing the temperature to decrease and increasing the fuel consumption.

[0032] It should be noted that in this text, terms such as "including", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0033] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A hazardous waste drying treatment device, comprising a secondary combustion chamber (5) and a rotary kiln (6), characterized in that: a matched outer door (3) and inner door (4) are arranged on the secondary combustion chamber (5); a tray (2) is arranged on the inner wall of the outer door (3); and a feeding hopper (1) matched with the tray (2) is arranged on one side of the secondary combustion chamber (5). The feeding hopper (1) is used for conveying materials to the tray (2); the outer door (3) and the inner door (4) realize sealing in different opening states respectively, and the inner door (4) is opened when the outer door (3) is closed. The materials in the tray (2) are in contact with the high-temperature airflow in the secondary combustion chamber (5), and the moisture and volatile gases in the materials are gradually separated from the materials and flow out of the secondary combustion chamber (5) with the high-temperature airflow, and then the materials are subjected to subsequent harmfulness reduction treatments in the secondary combustion chamber (5). ​ 2. The hazardous waste drying treatment apparatus according to claim 1, characterized by: ​ 3. The hazardous waste drying treatment apparatus according to claim 1, characterized by: ​

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