Material collecting, condensing and settling device

Abstract

The utility model discloses a material collecting, condensing and settling device which comprises a supporting frame, a plurality of settling boxes are sequentially installed on the supporting frame, an air inlet pipe is installed on the first settling box, an air outlet pipe is installed on the last settling box, and the settling boxes are sequentially communicated through condensing pipes to form a closed airflow channel. The bottom of each settling box is provided with a discharge port, a discharge valve is mounted on each discharge port, and a product collecting container is mounted at an outlet of each discharge valve. According to the utility model, elemental arsenic is collected and cooled and crystallized in the closed airflow channel, so that arsenic steam leakage is avoided, and continuous and stable operation of arsenic collection operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the production of elemental arsenic by using arsenic alkali residue in a short process, in particular to a material collecting, condensing and settling device. Background Art

[0002] Nonferrous metal smelting and environmental remediation processes generate a significant amount of high-arsenic waste, such as white smoke from copper, lead, and zinc smelting and arsenic-alkali slag from antimony refining. However, in recent years, research has gradually recognized that using high-arsenic waste as a raw material to produce elemental arsenic may be the most effective treatment method for harmless, reduced, and resource-efficient treatment of high-arsenic waste.

[0003] At present, the main methods for preparing elemental arsenic are pyrometallurgy and wet metallurgy. However, due to the problems of low recovery rate, high cost and serious environmental pollution in the wet metallurgy, the existing process technology mainly uses pyrometallurgy to prepare elemental arsenic. The pyrometallurgy to prepare elemental arsenic is to use arsenic compounds such as arsenic trioxide, arsenate, arsenic sulfide as raw materials, and adopt vacuum distillation, pyrometallurgy carbon reduction and oxygen reduction to prepare metallic elemental arsenic, and collect the elemental arsenic through condensation crystallization. Taking the preparation of metallic arsenic from white arsenic as an example, the white arsenic is fully mixed with the reducing agent, heated and reduced in a sealed electric vertical tank, and the generated metallic arsenic vapor is cooled and crystallized on the condensation hood in the vertical furnace. However, although the use of condensation hood to collect arsenic can achieve better arsenic collection indicators, it has the problem of weak sealing and cannot completely prevent arsenic vapor leakage at high temperatures. At the same time, it puts forward higher standards for condensation efficiency, cooling medium and cooling rate, which is not conducive to the continuous and stable operation of metallic arsenic collection operations. Utility Model Content

[0004] The technical problem to be solved by the utility model is that, in view of the deficiency of weak sealing performance of arsenic collected by condensation hood in the prior art, the utility model provides a material collecting condensation sedimentation device with good sealing performance and capable of preventing arsenic vapor leakage.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A material collection, condensation and sedimentation device comprises a support frame, on which a plurality of sedimentation boxes are sequentially mounted, an air inlet pipe is mounted on the first sedimentation box, and an air outlet pipe is mounted on the last sedimentation box, the plurality of sedimentation boxes are sequentially connected through condensation pipes to form a closed air flow channel, and a discharge port is respectively provided at the bottom of each sedimentation box, a discharge valve is mounted on the discharge port, and a product collection container is mounted at the outlet of the discharge valve.

[0007] The utility model provides a plurality of settling boxes, and connects the plurality of settling boxes in sequence through condensing pipes to form a closed air flow channel, so that the arsenic vapor can be cooled and crystallized in the closed air flow channel, thereby avoiding leakage of the arsenic vapor and ensuring the condensation efficiency and cooling speed, which is conducive to the continuous and stable operation of the arsenic collection operation.

[0008] In order to increase the arsenic collection efficiency, the two front sedimentation boxes are directly connected into one, and the rear sedimentation boxes are connected in sequence through condensation pipes.

[0009] Preferably, each of the sedimentation boxes is respectively equipped with an air hammer so as to vibrate the elemental arsenic adhering to the inner wall of the sedimentation box to the discharge port.

[0010] Preferably, the discharge valve is a pneumatic discharge valve.

[0011] Preferably, the outlet pipe is connected to a wet electrostatic precipitator, so that the unsettled arsenic vapor enters the wet electrostatic precipitator through the outlet pipe for dust removal before being discharged in compliance with emission standards.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model realizes cooling of arsenic vapor through the condenser tube, thereby increasing the cooling area, improving the cooling efficiency, and further increasing the arsenic collection efficiency.

[0014] The utility model enables the collection of elemental arsenic to be cooled and crystallized in a closed air flow channel, thus avoiding leakage of arsenic vapor and being conducive to the continuous and stable operation of the arsenic collection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a structural schematic diagram of an embodiment of a material collection, condensation and sedimentation device of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with specific preferred embodiments, but the scope of protection of the present invention is not limited thereby.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0020] See also Figure 1 An embodiment of the material collection, condensation and sedimentation device of the present invention includes an air inlet pipe 2, a condensation pipe 6, a sedimentation box 3, a discharge valve 4, a product collection container 5, a support frame 1 and an air outlet pipe 7. A plurality of sedimentation boxes 3 are sequentially mounted on the support frame 1, with the air inlet pipe 2 mounted on the top of the first sedimentation box and the air outlet pipe 7 mounted on the top of the last sedimentation box. The first two sedimentation boxes 3 are connected as one, and the rear sedimentation boxes 3 are separated from each other by a partition 9 and sequentially connected through the condensation pipe 6 to form a closed air flow channel. A discharge port is provided at the bottom of each sedimentation box 3, and a discharge valve 4 is mounted on the discharge port. The product collection container 5 is mounted at the outlet of the discharge valve 4. The discharge valve 4 is preferably a pneumatic discharge valve.

[0021] During use, the present invention firstly allows arsenic vapor generated by high-temperature reduction roasting to enter a closed airflow channel formed by a connection between settling boxes 3 via an inlet pipe 2. The high-temperature arsenic vapor rapidly cools and condenses into a solid state within the entire closed airflow channel (settling boxes 3) under the condensing action of a condenser pipe 6. The majority of the arsenic vapor entering through the inlet pipe 2 settles and collects within the first two settling boxes 3, with a smaller portion collected within the rear settling box 3, achieving efficient collection of elemental arsenic. The very small amount of arsenic vapor that remains unsettled within the settling boxes 3 enters a wet electrostatic precipitator through an outlet pipe 7 for dust removal and discharge to standard conditions. The elemental arsenic collected within the settling boxes 3 adheres to the inner wall of the settling boxes 3 and can be vibrated to the discharge port by activating an air hammer 8 mounted on the settling boxes 3. The collected elemental arsenic within the settling boxes 3 is then discharged into a sealed product collection container 5 by activating a pneumatic discharge valve 4, ultimately achieving safe and efficient collection of elemental arsenic.

[0022] Obviously, the present invention realizes cooling of arsenic vapor through the condenser tube 6, which can increase the cooling area, improve the cooling efficiency, and further increase the arsenic collection efficiency.

[0023] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification of the above embodiment made in accordance with the essence of the present invention without departing from the content of the present invention should fall within the scope of protection of the present invention.

Claims

1. A material collection, condensation and sedimentation device, comprising a support frame, characterized in that: Multiple sedimentation boxes are installed on the support frame in sequence, the first sedimentation box is installed with an air inlet pipe, and the last sedimentation box is installed with an air outlet pipe. The multiple sedimentation boxes are connected in sequence through condensation pipes to form a closed air flow channel, and a discharge port is provided at the bottom of each sedimentation box, a discharge valve is installed on the discharge port, and a product collection container is installed at the outlet of the discharge valve.

2. The material collection, condensation and sedimentation device according to claim 1, characterized in that: The two front sedimentation tanks are directly connected into one, and the rear sedimentation tanks are connected in sequence through condensation pipes.

3. The material collection, condensation and sedimentation device according to claim 1, characterized in that: An air hammer is installed on each of the settlement boxes.

4. The material collection, condensation and sedimentation device according to claim 1, characterized in that: The discharge valve is a pneumatic discharge valve.

5. The material collection, condensation and sedimentation device according to claim 1, characterized in that: The air outlet pipe is connected to a wet electrostatic precipitator.

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