CN2308432Y - Filter tube - Google Patents

Abstract

The utility model discloses a filter tube, comprising filter material (1) which is attached to the outer wall of an inner ring (2); the wall of the inner ring (2) is studded with through holes (3); the outer side of the filter material (1) is wound with a silk screen (4); both ends of the inner ring (2) are fastened by an end cover (5). The utility model is used for filtering the gas entering the oxidizing furnace used in the chemical industry enterprise. The utility model solves the problem that the slag falling and the damage frequently happen when the bisque tube is used for filtering. The utility model has the advantages of simpler structure, low cost, convenient operation, and good effect, and the Pt consumption can be reduced, and the oxidation rate is raised. The utility model can be used for replacing the bisque tube to filter the gas entering the oxidation oven.

Description

A kind of screen pipe

The utility model relates to a kind of filter of gas, particularly a kind of device that the gas that enters the oxidation furnace that chemical enterprise uses is filtered.

Liquefied ammonia is the primary raw material of producing nitric acid.The process of producing nitric acid is that liquefied ammonia generates gas ammonia through handling, and is mixed into oxidation furnace with air in certain amount then and carries out oxidation, treated again generation nitric acid.Adopt platinum guaze as catalyst in the oxidizing process.For the mist that enters oxidation furnace, traditional filter method is when mist enters oxidation furnace, is filtered by the bique pipe that is installed in the stokehold.Because breakage takes place the bique pipe easily, once breakage will form the gas short circuit, mist will directly enter oxidation furnace.The gas of filtered enters oxidation furnace will pollute platinum guaze, reduce oxygenation efficiency, and the platinum consumption is increased.Damaged even without taking place, the bique pipe in use also often falls slag, falls slag and is mixed in and has in fact polluted gas in the mist, and it reduces oxygenation efficiency along with mist also exists the pollution platinum guaze after entering oxidation furnace, makes the problem of platinum consumption increase.

The purpose of this utility model is: provide that a kind of structure is simple, use cost is low, easy to use, the filter that can filter the gas that enters oxidation furnace of good filtration effect.Its structure is to adopt ring (2) in the cylindrical shape that is densely covered with through hole (3) on the barrel, and filtering material (1) is tied the outer wall that is attached to interior ring (2) with silk screen (4), and is fastening at two ends with end cap (5).

Formation of the present utility model comprises filter material (1), it is characterized in that: filter material (1) is densely covered with through hole (3) attached to the outer wall of interior ring (2) on the wall of interior ring (2); The outer felt of filter material (1) is wound with silk screen (4); There is fastening end cap (5) at the two ends of interior ring (2).

Compared with the prior art, the utility model has adopted the strong tubular filter device of the better simply rigidity of a kind of structure, has solved with the bique pipe and has filtered recurrent fall slag and damaging problem.Have that structure is simple, use cost is low, easy to use, good practical effect, can reduce the platinum consumption and improve the characteristics of oxygenation efficiency.Can be used for substituting the bique pipe filters the gas that enters oxidation furnace.

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.

Accompanying drawing 1 is an organigram of the present utility model;

Formation of the present utility model comprises filter material (1), it is characterized in that: filter material (1) is densely covered with through hole (3) attached to the outer wall of interior ring (2) on the wall of interior ring (2); The outer felt of filter material (1) is wound with silk screen (4); There is fastening end cap (5) at the two ends of interior ring (2).

Ring (2) and fastening end cap (5) all adopt stainless steel to make in of the present utility model, and silk screen (4) adopts glass mat with glass wire or stainless steel material, filter material (1).Though the utility model cost of manufacture is higher than the bique pipe, be longer than the bique pipe service life greatly, so use cost is lower than the use cost of bique pipe, and filter effect is significantly better than the filter effect of bique pipe.

Claims (1)

1, a kind of screen pipe comprises filter material (1), it is characterized in that: filter material (1) is densely covered with through hole (3) attached to the outer wall of interior ring (2) on the wall of interior ring (2); The outer felt of filter material (1) is wound with silk screen (4); There is fastening end cap (5) at the two ends of interior ring (2).

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