Ammonia gas drying device

Abstract

The utility model provides an ammonia gas drying device which comprises a filter cartridge, a molecular sieve filter element is fixed in the filter cartridge, the upper end of the filter cartridge is communicated with an exhaust pipe, the lower end of the filter cartridge is communicated with an air inlet pipe, an electric heating box is installed at the side end of the filter cartridge, and an air blowing pipe on the heating box is communicated with the filter cartridge at the lower end of the molecular sieve filter element. An air inlet pipe on the heating box is communicated with an air compressor, and an emptying pipe communicated with an exhaust pipe is arranged at the upper end of the filter cartridge. According to the ammonia gas drying device, when the molecular sieve filter element is saturated, air flow generated by the air compressor is heated through the heating box to form hot air, and the molecular sieve filter element subjected to adsorption saturation is dried through the hot air, so that the molecular sieve filter element is regenerated and reduced. After reduction of the molecular sieve filter element is completed, the heating box is closed, and airflow generated by the air compressor directly blows the molecular sieve filter element, so that the molecular sieve filter element can be rapidly cooled, the cooling efficiency is improved, and the adsorption effect of the molecular sieve filter element is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to ammonia drying technology, in particular to an ammonia drying device. BACKGROUND

[0002] The ammonia drying device is an equipment for drying ammonia by adsorbing water in the ammonia through a molecular sieve filter element to reduce the water content in the ammonia.

[0003] In the existing ammonia drying device, the molecular sieve filter element is regenerated and reduced by drying through a heater. The heater heats the molecular sieve filter element to discharge the adsorbed water in the molecular sieve filter element through a vent pipe. The temperature of the regenerated and reduced molecular sieve filter element is high, and the adsorption capacity of the molecular sieve filter element will decrease with the increase of the temperature. Therefore, the existing ammonia drying device cannot quickly cool the regenerated and reduced molecular sieve filter element, which affects the production efficiency and the adsorption effect of the molecular sieve filter element. CONTENT OF THE INVENTION

[0004] The present application provides an ammonia drying device to solve the problem that the existing ammonia drying device cannot quickly cool the molecular sieve filter element after drying and regeneration, which affects the production efficiency and the adsorption effect of the molecular sieve filter element.

[0005] The present application provides an ammonia drying device, which comprises a filter cylinder, a molecular sieve filter element fixed in the filter cylinder, an exhaust pipe communicated with the upper end of the filter cylinder, an air inlet pipe communicated with the lower end of the filter cylinder, an electric heating heating box installed on the side end of the filter cylinder, a blowing pipe on the heating box communicated with the filter cylinder at the lower end of the molecular sieve filter element, an air inlet pipe on the heating box communicated with an air compressor, and a vent pipe communicated with the exhaust pipe at the upper end of the filter cylinder.

[0006] Optionally, the lower end of the molecular sieve filter element is conical, and the blowing pipe passes through the filter cylinder to blow air to the conical side wall of the molecular sieve filter element.

[0007] Optionally, a conical cover is arranged on the conical wall at the lower end of the molecular sieve filter element, the conical cover can slide downward along the inner wall of the filter cylinder to form an annular gap between the molecular sieve filter element, the bottom of the conical cover is fixed with an upward air distribution plate, and the air distribution plate is communicated with the telescopic air inlet pipe.

[0008] Optionally, the gap between the blowing pipe and the conical wall of the molecular sieve filter element and the conical cover is communicated, and the lower end of the side wall of the filter cylinder is provided with an air outlet pipe.

[0009] Optionally, the blowing pipe is communicated with the side wall of the filter cylinder along a tangent.

[0010] The ammonia drying apparatus provided in this application uses a molecular sieve filter element to adsorb moisture from ammonia. When the molecular sieve filter element is saturated, a heating chamber heats the airflow generated by an air compressor to form hot air, which is then used to dry the saturated molecular sieve filter element, thereby regenerating and restoring it.

[0011] After the molecular sieve filter element is restored, the heating box is turned off, and the airflow generated by the air compressor is directly blown onto the molecular sieve filter element, which can quickly cool the molecular sieve filter element, improve the cooling efficiency, and enhance the adsorption effect of the molecular sieve filter element. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a front view of an ammonia drying apparatus provided in an embodiment of this application;

[0014] Figure 2 An ammonia drying apparatus provided in one embodiment of this application Figure 1 Top view;

[0015] Figure 3 An ammonia drying apparatus provided in one embodiment of this application Figure 1 A sectional view;

[0016] Figure 4 An ammonia drying apparatus provided in one embodiment of this application Figure 2 A sectional view.

[0017] Explanation of reference numerals in the attached figures:

[0018] Filter cartridge 1; Molecular sieve filter element 2; Air inlet pipe 3; Exhaust pipe 4; Heating box 5; Blower pipe 6; Air inlet pipe 7; Air compressor 8; Conical shroud 9; Air distribution plate 10; Expansion joint 11; Air outlet pipe 12; Vent pipe 13. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0020] like Figures 1-4As shown, an embodiment of the present application provides a kind of ammonia drying device, including filter cartridge 1, molecular sieve filter core 2 is fixed in the filter cartridge 1, the upper end of the filter cartridge 1 is communicated with exhaust pipe 4, the lower end is communicated with air inlet pipe 3, the side end of the filter cartridge 1 is equipped with electric heating heating box 5, the air blowing pipe 6 on the heating box 5 is communicated with the filter cartridge 1 of the lower end of molecular sieve filter core 2, the air inlet pipe 7 on the heating box 5 is communicated with air compressor 8, the upper end of the filter cartridge 1 is equipped with vent pipe 13 communicated with exhaust pipe 4.Valve for switching on-off is installed on exhaust pipe 4 and vent pipe 13.

[0021] When using, ammonia enters the lower end of filter cartridge 1 from air inlet pipe 3, is filtered by molecular sieve filter core 2 adsorption upwards, and the dry ammonia after filtering out moisture is discharged from the upper end exhaust pipe 4.Molecular sieve filter core 2 is saturated, and air inlet pipe 3 is closed, and high-pressure airflow generated by air compressor 8 enters heating box 5 along air inlet pipe 7, and the airflow is heated to form hot air by electric heater in heating box 5, and enters the lower end of molecular sieve filter core 2 in filter cartridge 1 from air blowing pipe 6.

[0022] Hot air entering filter cartridge 1 passes through molecular sieve filter core 2 from bottom to top to regenerate and restore molecular sieve filter core 2, and the moisture in molecular sieve filter core 2 is discharged through vent pipe 13.After the restoration of molecular sieve filter core 2, heating box 5 is closed, and the high-pressure airflow generated by air compressor 8 directly passes through heating box 5 to enter filter cartridge 1, so that molecular sieve filter core 2 is quickly cooled.

[0023] In the embodiment, molecular sieve filter core 2 is used to adsorb the moisture in ammonia.When molecular sieve filter core 2 is saturated, the airflow generated by air compressor 8 is heated to form hot air by heating box 5, and the hot air is used to dry the saturated molecular sieve filter core 2, so as to regenerate and restore molecular sieve filter core 2.

[0024] After the restoration of molecular sieve filter core 2 is completed, heating box 5 is closed, and the airflow generated by air compressor 8 directly blows molecular sieve filter core 2, so that molecular sieve filter core 2 is quickly cooled, the cooling efficiency is improved, and the adsorption effect of molecular sieve filter core 2 is enhanced.

[0025] In a possible implementation, the lower end of the molecular sieve filter core 2 is tapered, and the air blowing pipe 6 blows air towards the tapered side wall of the molecular sieve filter core 2 through the filter cartridge 1.

[0026] The lower end of the molecular sieve filter core 2 is tapered to increase the contact area with hot air during drying, and the hot air blown by the air blowing pipe 6 enters the molecular sieve filter core 2 from the tapered side wall to dry and regenerate, effectively improving the regeneration and restoration efficiency of the molecular sieve filter core 2.

[0027] In a possible implementation, a conical cover 9 is attached to the conical wall of the lower end of the molecular sieve filter element 2, and the conical cover 9 can slide down along the inner wall of the filter cartridge 1 to form an annular gap between the conical cover 9 and the molecular sieve filter element 2. The bottom of the conical cover 9 is fixed with an upward air distribution plate 10, and the air distribution plate 10 is in communication with the telescopic air inlet pipe 3.

[0028] The conical cover 9 can slide up and down along the inner wall of the filter cartridge 1. When the conical cover 9 is attached to the molecular sieve filter element 2, the air distribution plate 10 abuts against the bottom of the molecular sieve filter element 2, so that the ammonia gas can pass through the molecular sieve filter element 2 from bottom to top for adsorption and filtration.

[0029] When the conical cover 9 slides down to separate from the molecular sieve filter element 2, a gap is formed between the conical cover 9 and the conical side wall of the molecular sieve filter element 2, so that the hot air for drying can enter the gap between the conical cover 9 and the molecular sieve filter element 2, and the contact area with the molecular sieve filter element 2 is increased for drying and reduction from the inside of the conical side wall of the molecular sieve filter element 2.

[0030] In a possible implementation, the blow pipe 6 is in communication with the gap formed between the conical wall of the molecular sieve filter element 2 and the conical cover 9, and the lower end of the side wall of the filter cartridge 1 is provided with an air outlet pipe 12.

[0031] When the conical cover 9 slides down to form a gap between the conical cover 9 and the molecular sieve filter element 2, the blow pipe 6 corresponds to the position of the gap, and the hot air is blown into the gap to dry and reduce the molecular sieve filter element 2.

[0032] When the conical cover 9 slides up to attach to the molecular sieve filter element 2, the conical cover 9 is located at the upper end of the pipe opening of the blow pipe 6, the blow pipe 6 blows air from below the conical wall of the conical cover 9, at this time, the heating box 5 is closed, the high-pressure air flow generated by the air compressor 8 is blown into the conical wall below the conical cover 9, which does not affect the ammonia gas entering the air inlet pipe 3 for filtration, and at the same time, the conical cover 9 continuously cools the molecular sieve filter element 2, which can further improve the adsorption capacity of the molecular sieve filter element 2.

[0033] In a possible implementation, the blow pipe 6 is in tangential communication with the side wall of the filter cartridge 1.

[0034] The blow pipe 6 blows air into the filter cartridge 1 along the tangent, which can form a cyclone of the cold and hot air entering the filter cartridge 1, reduce the resistance of the cold and hot air flow, and increase the flow rate, which can enhance the effects of drying and regeneration and cooling.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand; it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An ammonia drying device, comprising a filter cartridge (1) with a molecular sieve filter element (2) fixed therein, an exhaust pipe (4) communicated with the upper end of the filter cartridge (1), and an air inlet pipe (3) communicated with the lower end of the filter cartridge (1), characterized in that: The side end of the filter cartridge (1) is provided with an electric heating heating box (5), a blowing pipe (6) on the heating box (5) is communicated with the filter cartridge (1) at the lower end of the molecular sieve filter element (2), an air inlet pipe (7) on the heating box (5) is communicated with an air compressor (8), and the upper end of the filter cartridge (1) is provided with a vent pipe (13) communicated with the exhaust pipe (4).

2. The ammonia drying device of claim 1, wherein: The lower end of the molecular sieve filter element (2) is conical, the blowing pipe (6) passes through the filter cartridge (1) and blows air towards the conical side wall of the molecular sieve filter element (2).

3. The ammonia drying apparatus of claim 2, wherein: A conical cover (9) is arranged on the conical wall at the lower end of the molecular sieve filter element (2), the conical cover (9) can slide downward along the inner wall of the filter cartridge (1) to form an annular gap between the molecular sieve filter element (2), the bottom of the conical cover (9) is fixed with an upward air distribution disc (10), and the air distribution disc (10) is communicated with the telescopic air inlet pipe (3).

4. The ammonia drying apparatus of claim 3, wherein: The gap between the blowing pipe (6), the conical wall of the molecular sieve filter element (2) and the conical cover (9) is communicated, and the lower end of the side wall of the filter cartridge (1) is provided with an air outlet pipe (12).

5. The ammonia drying device according to claim 2 or 4, characterized in that: The blowing pipe (6) is communicated with the side wall of the filter cartridge (1) along a tangent.

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