Device for recovering oxazole in waste gas

Abstract

The utility model provides a device for recovering oxazole in waste gas, and belongs to the technical field of chemical equipment. Comprising an exhaust barrel and a rotating plate rotationally connected in the exhaust barrel, the rotating plate divides an inner cavity of the exhaust barrel into an air inlet cavity and a backwashing cavity, a plurality of filter plates are arranged on the rotating plate at intervals, an air inlet pipe and an exhaust pipe are symmetrically arranged at the two ends of the exhaust barrel, and a backwashing water inlet pipe and a backwashing water outlet pipe are further symmetrically arranged at the two ends of the exhaust barrel. The device has the advantages of low water consumption and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment and relates to a device for recovering oxazole in waste gas. Background Art

[0002] In the process of preparing oxazole by decarboxylation of 4-oxazolecarboxylic acid, a small amount of oxazole will still remain in the waste gas after it is collected. Since oxazole is a harmful substance, after the oxazole in the waste gas is recovered by condensation, the oxazole in the waste gas needs to be reprocessed to achieve the requirement of odor-free exhaust of the waste gas. In the prior art, the characteristic of oxazole being easily soluble in water is generally utilized, and a water washing method is adopted to wash the oxazole-containing waste gas with water and then discharge it. This method consumes a lot of water. Utility Model Content

[0003] The purpose of the utility model is to provide a device for recovering oxazole in waste gas in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is how to reduce the water consumption.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a device for recovering oxazole in exhaust gas, characterized in that it includes an exhaust pipe and a rotating plate rotatably connected in the exhaust pipe, the rotating plate divides the inner cavity of the exhaust pipe into an air intake chamber and a backwash chamber, a plurality of filter plates are alternately arranged on the rotating plate, an air intake pipe and an exhaust pipe are symmetrically arranged at both ends of the exhaust pipe, and a backwash water inlet pipe and a backwash drain pipe are also symmetrically arranged at both ends of the exhaust pipe.

[0005] Furthermore, the filter plate is a mesh plate made of absorbent cotton material.

[0006] During normal operation, the waste gas is sent into the drum from the air inlet pipe. The air inlet chamber of the drum is connected to the air inlet pipe and the exhaust pipe. The characteristic of oxazole in the waste gas being soluble in water is utilized to adsorb the oxazole in the waste gas on the filter plate. After a period of treatment, the rotating plate is rotated 180 degrees to switch the clean part of the filter plate to the air inlet chamber, while the backwash chamber completes the reverse cleaning of the filter plate. The reverse cleaning of the filter plate is achieved by sending clean water into the backwash inlet pipe and discharging it from the backwash drain pipe to reversely clean the filter plate, remove the oxazole-containing wastewater adsorbed on it, and re-adsorb the clean water on the filter plate. This process is repeated, which can greatly reduce the water consumption, make the water use intermittent, and the waste gas is continuously treated. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the device for treating oxazole in waste gas.

[0008] In the figure, 1. exhaust pipe; 2. rotating plate; 3. air inlet chamber; 4. backwash chamber; 5. filter plate; 6. air inlet pipe; 7. exhaust pipe; 8. backwash water inlet pipe; 9. backwash drain pipe. DETAILED DESCRIPTION

[0009] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0010] like Figure 1 As shown, the device for recovering oxazole in exhaust gas includes an exhaust pipe 1, a rotating plate 2 rotatably connected in the exhaust pipe 1, the rotating plate 2 divides the inner cavity of the exhaust pipe 1 into an air intake chamber 3 and a backwash chamber 4, a plurality of filter plates 5 are alternately arranged on the rotating plate 2, an air intake pipe 6 and an exhaust pipe 7 are symmetrically arranged at both ends of the exhaust pipe 1, a backwash water inlet pipe 8 and a backwash drain pipe 9 are also symmetrically arranged at both ends of the exhaust pipe 1, and the filter plate 5 is a mesh plate made of absorbent cotton material.

[0011] During normal operation, the waste gas is sent into the drum from the air inlet pipe 6. The air inlet chamber 3 of the drum is connected to the air inlet pipe 6 and the exhaust pipe 7. The oxazole in the waste gas is adsorbed on the filter plate 5 by utilizing the characteristic that oxazole dissolves in water. After a period of treatment, the rotating plate is rotated 2180° to switch the clean part of the filter plate 5 to the air inlet chamber 3, and the backwash chamber 4 completes the reverse cleaning of the filter plate 5. The reverse cleaning of the filter plate 5 is carried out by sending clean water to the backwash water inlet pipe 8 and discharging it from the backwash drain pipe 9, so as to reversely clean the filter plate 5, remove the oxazole-containing wastewater adsorbed thereon, and re-adsorb the clean water on the filter plate 5. This is repeated, which can greatly reduce the water consumption, make the water use intermittent, and the waste gas is continuously treated.

[0012] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A device for recovering oxazole from waste gas, characterized in that: The invention comprises an exhaust pipe (1), a rotating plate (2) rotatably connected in the exhaust pipe (1), wherein the rotating plate (2) divides the inner cavity of the exhaust pipe (1) into an air intake cavity (3) and a backwash cavity (4), a plurality of filter plates (5) are alternately arranged on the rotating plate (2), an air intake pipe (6) and an exhaust pipe (7) are symmetrically arranged at both ends of the exhaust pipe (1), and a backwash water inlet pipe (8) and a backwash drain pipe (9) are also symmetrically arranged at both ends of the exhaust pipe (1).

2. The device for recovering oxazole from waste gas according to claim 1, characterized in that: The filter plate (5) is a mesh plate made of water-absorbing cotton material.

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