Ammonia refining device

Abstract

An ammonia refining device comprises an ammonia crystallizer set, the ammonia crystallizer set is connected with a stripping tower, the ammonia crystallizer set comprises two ammonia crystallizers, and the two ammonia crystallizers are arranged in parallel; the adsorption tank group is connected with the ammonia crystallizer group, the adsorption tank group comprises two adsorption tanks, and the two adsorption tanks are arranged in parallel; the ammonia liquid separator is arranged at the outlet end of the adsorption tank group; the first overline is arranged between the two ammonia crystallizers, so that the two ammonia crystallizers are connected in series; the second overline is arranged between the two adsorption tanks, so that the two adsorption tanks are connected in series; the third overline is arranged between the ammonia crystallizer group and the ammonia liquid separator, the ammonia crystallizers are provided with processes which can be operated in parallel or in series, and the ammonia crystallizers can be flexibly adjusted according to the quality of gas ammonia. The adsorption tanks can be arranged in parallel, in series and in a cut-out process, and can be flexibly adjusted according to the quality of ammonia gas. Through the flow setting, the gas ammonia quality can be flexibly adjusted, enough space is reserved for actual operation, and the operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to an ammonia refining device. Background Art

[0002] As the proportion of high-sulfur and high-nitrogen crude oil processed by refineries increases, the amount of wastewater generated by petrochemical enterprises and the composition of pollutants in the wastewater are becoming increasingly complex, and enterprises are facing severe challenges in treating sulfur, nitrogen and oil-containing wastewater.

[0003] At present, the high-concentration sulfur- and ammonia-containing wastewater discharged from the production equipment of petrochemical enterprises is mainly purified by acidic water stripping devices, while H2S is recovered for sulfur recovery devices to produce sulfur. NH3 is removed from the H2S by the ammonia refining system and then compressed by an ammonia compressor to produce liquid ammonia or directly produce ammonia water.

[0004] When the crude oil is deteriorated or affected by external factors, it is easy to cause liquid ammonia to be colored. A single ammonia crystallizer operating alone can no longer meet production needs, which is easy to cause liquid ammonia to be colored and affect market prices. Summary of the invention

[0005] In order to solve the technical defects in the prior art, the utility model provides an ammonia refining device.

[0006] The technical solution adopted by the utility model is: an ammonia refining device, comprising:

[0007] An ammonia crystallizer group, wherein the ammonia crystallizer group is connected to the stripping tower, and the ammonia crystallizer group includes two ammonia crystallizers, which are arranged in parallel;

[0008] An adsorption tank group, wherein the adsorption tank group is connected to the ammonia crystallizer group, and the adsorption tank group includes two adsorption tanks, which are arranged in parallel;

[0009] An ammonia-liquid separator, wherein the ammonia-liquid separator is arranged at the outlet end of the adsorption tank group;

[0010] A first cross-over line, wherein the first cross-over line is arranged between two ammonia crystallizers to realize the series connection between the two ammonia crystallizers;

[0011] A second cross-over line, wherein the second cross-over line is arranged between the two adsorption tanks to realize the series connection between the two adsorption tanks;

[0012] The third cross-line is arranged between the ammonia crystallizer group and the ammonia liquid separator.

[0013] It also includes an ammonia compressor, which is connected to the rear of the ammonia-liquid separator.

[0014] The first cross-line, the second cross-line and the third cross-line are all provided with regulating valves.

[0015] The adsorption tank is filled with adsorbent.

[0016] The beneficial effects of the utility model are as follows: the utility model provides an ammonia refining device, including an ammonia crystallizer group, the ammonia crystallizer group is connected to a stripping tower, the ammonia crystallizer group includes two ammonia crystallizers, and the two ammonia crystallizers are arranged in parallel; the adsorption tank group is connected to the ammonia crystallizer group, the adsorption tank group includes two adsorption tanks, and the two adsorption tanks are arranged in parallel; the ammonia liquid separator is arranged at the outlet end of the adsorption tank group; the first cross-line is arranged between the two ammonia crystallizers to realize the series connection between the two ammonia crystallizers; the second cross-line is arranged between the two adsorption tanks to realize the series connection between the two adsorption tanks; the third cross-line is arranged between the ammonia crystallizer group and the ammonia liquid separator, and the ammonia crystallizer is arranged in a process that can be operated in parallel or in series, and can be flexibly adjusted according to the quality of gas ammonia. The adsorption tank is arranged in a process that can be connected in parallel, in series, and cut out, and can be flexibly adjusted according to the quality of gas ammonia. Through the above process settings, the quality of gas ammonia can be flexibly adjusted, and sufficient room is left for actual operation, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model.

[0018] Among them, 1-ammonia crystallizer, 2-adsorption tank, 3-ammonia liquid separator, 4-first cross-line, 5-second cross-line, 6-third cross-line. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] An ammonia refining device includes an ammonia crystallizer group, the ammonia crystallizer group is connected to a stripping tower, the ammonia crystallizer group includes two ammonia crystallizers 1, and the two ammonia crystallizers 1 are arranged in parallel; an adsorption tank group, the adsorption tank group is connected to the ammonia crystallizer group, the adsorption tank group includes two adsorption tanks 2, and the two adsorption tanks 2 are arranged in parallel; an ammonia liquid separator 3, the ammonia liquid separator 3 is arranged at the outlet end of the adsorption tank group; a first cross-line 4, the first cross-line 4 is arranged between the two ammonia crystallizers 1 to achieve the series connection between the two ammonia crystallizers 1; a second cross-line 5, the second cross-line 5 is arranged between the two adsorption tanks 2 to achieve the series connection between the two adsorption tanks 2; a third cross-line 6, the third cross-line 6 is arranged between the ammonia crystallizer group and the ammonia liquid separator 3. It also includes an ammonia compressor, the ammonia compressor is connected to the rear of the ammonia liquid separator 3. The first cross-line 4, the second cross-line 5 and the third cross-line 6 are all provided with regulating valves. The adsorption tank 2 is filled with adsorbent. During operation, gas ammonia comes from the upstream, passes through one of the ammonia crystallizers and enters the downstream. If the quality is not good, it passes through one ammonia crystallizer and enters another ammonia crystallizer through the first cross-line 4 with a regulating valve, and operates in series. If the quality of the gas ammonia coming out of the ammonia crystallizer is normal, it enters the downstream ammonia liquid separator 3 and ammonia compressor through the third cross-line 6 with a regulating valve. If the quality is still insufficient, it can enter the adsorption tank. If it is still unqualified after coming out of one adsorption tank, it can enter another adsorption tank through the second cross-line 5 with a regulating valve, and operate in series.

[0021] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the utility model concept is not limited to this utility model. Any modification using the utility model concept will be included in the scope of protection of this patent.

[0022] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An ammonia refining device, characterized in that: include: an ammonia crystallizer group, wherein the ammonia crystallizer group is connected to the stripping tower, and the ammonia crystallizer group comprises two ammonia crystallizers (1), and the two ammonia crystallizers (1) are arranged in parallel; An adsorption tank group, wherein the adsorption tank group is connected to the ammonia crystallizer group, and the adsorption tank group comprises two adsorption tanks (2), and the two adsorption tanks (2) are arranged in parallel; An ammonia-liquid separator (3), wherein the ammonia-liquid separator (3) is arranged at the outlet end of the adsorption tank group; A first jumper (4), wherein the first jumper (4) is arranged between the two ammonia crystallizers (1) to realize the series connection between the two ammonia crystallizers (1); A second jumper line (5), wherein the second jumper line (5) is arranged between the two adsorption tanks (2) to realize the series connection between the two adsorption tanks (2); A third crossover line (6), wherein the third crossover line (6) is arranged between the ammonia crystallizer group and the ammonia liquid separator (3).

2. An ammonia refining device according to claim 1, characterized in that: It also includes an ammonia compressor, which is connected to the rear of the ammonia-liquid separator (3).

3. An ammonia refining device according to claim 1, characterized in that: The first crossover line (4), the second crossover line (5) and the third crossover line (6) are all provided with regulating valves.

4. An ammonia refining device according to claim 1, characterized in that: The adsorption tank (2) contains an adsorbent.

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