Natural gas desulfurization device

Abstract

The utility model discloses a natural gas desulfurization device which comprises a desulfurization tank, a gas inlet pipe and a gas outlet pipe, the plurality of filter hoppers are stacked up and down and arranged in the desulfurization tank at intervals, and in every two adjacent filter hoppers, the diameter of the upper filter hopper is larger, and the lower filter hopper is covered by the upper filter hopper; one end of the alkali liquor pipe is connected with an external alkali liquor storage tank, the other end of the alkali liquor pipe penetrates into the desulfurization tank from the top of the desulfurization tank and sequentially penetrates through the centers of all the filter hoppers, and a plurality of liquor drainage holes are formed in the part, located above each filter hopper, of the alkali liquor pipe. Sulfides in the natural gas can be effectively removed, and the sulfur content is reduced. And the adopted novel adsorbent has high cyclic utilization rate, so that the operation cost can be reduced, the energy consumption can be reduced, and the influence of the desulfurization process on the environment can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of natural gas desulfurization, and more specifically, to a natural gas desulfurization device. Background Art

[0002] Natural gas usually contains a certain amount of sulfides, such as hydrogen sulfide (H2S) and methyl mercaptan (CH3SH). These sulfides will produce toxic substances such as sulfur dioxide (SO2) and sulfur oxides (SO3) during combustion, which will cause serious harm to the environment and human health. Therefore, in the process of natural gas development, transportation and utilization, natural gas desulfurization is very important, and it is necessary to provide an efficient desulfurization device. Utility Model Content

[0003] In order to achieve these purposes and other advantages according to the utility model, one preferred embodiment of the utility model provides a natural gas desulfurization device, comprising:

[0004] The desulfurization tank is hollow inside, and an air inlet is arranged at the bottom of the desulfurization tank, and an exhaust port is arranged at the top;

[0005] A plurality of filter buckets are stacked up and down and arranged in the desulfurization tank at intervals, each of the filter buckets is small at the top and large at the bottom, and of two adjacent filter buckets, the filter bucket located at the top has a larger diameter and covers the filter bucket located at the bottom;

[0006] An alkali liquid pipe has one end connected to an external alkali liquid storage tank, and the other end penetrates from the top of the desulfurization tank and passes through the centers of all the filter buckets in sequence, and a plurality of drainage holes are provided on the portion of the alkali liquid pipe located above each filter bucket.

[0007] According to one embodiment of the utility model, an air duct is vertically installed in the desulfurization tank and fixed at the bottom of the desulfurization tank. One end of the air duct is connected to the air inlet, and the other end is close to but not in contact with the lowest filter bucket and is located directly below the filter bucket.

[0008] According to an embodiment of the utility model, the diameter of the air guide pipe is larger than the diameter of the air inlet of the desulfurization tank.

[0009] According to an embodiment of the utility model, it also includes an adsorption tank, the air inlet at the bottom of which is connected to the exhaust port of the desulfurization tank through a pipeline, and the first adsorption layer and the second adsorption layer are arranged in the adsorption tank from top to bottom.

[0010] According to an embodiment of the present invention, the first adsorption layer is a nano material adsorption layer, and the second adsorption layer is filled with a metal organic framework adsorption layer.

[0011] According to an embodiment of the utility model, the nano material adsorption layer is detachably mounted in the adsorption tank, and the metal organic framework adsorption layer is detachably mounted in the adsorption tank.

[0012] According to one embodiment of the utility model, a filter is installed at the air inlet of the desulfurization tank.

[0013] The utility model at least has the following beneficial effects:

[0014] The utility model first uses alkaline solution and sulfide reaction to desulfurize, and then uses adsorbent to further desulfurize, which can effectively remove sulfide in natural gas and reduce sulfur content. In addition, the use of new adsorbents (such as nanomaterials and metal organic frameworks) has a high recycling rate, which can reduce operating costs, reduce energy consumption, and reduce the impact of the desulfurization process on the environment. Both adsorption layers are modular and detachable, which is easy to install, maintain and repair.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the natural gas desulfurization device in the utility model. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0018] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0019] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0020] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0021] like Figure 1 As shown, a preferred embodiment of the present invention provides a natural gas desulfurization device, comprising:

[0022] The desulfurization tank 1 is hollow inside, and an air inlet is arranged at the bottom and an exhaust port is arranged at the top;

[0023] A plurality of filter buckets 2 are stacked up and down and arranged in the desulfurization tank 1 at intervals, each of the filter buckets 2 is small at the top and large at the bottom, and of two adjacent filter buckets 2, the filter bucket 2 located at the top has a larger diameter and covers the filter bucket 2 located at the bottom;

[0024] The alkali liquid pipe 3 has one end connected to the external alkali liquid storage tank, and the other end penetrates from the top of the desulfurization tank 1 and passes through the center of all the filter buckets 2 in sequence, and the part of the alkali liquid pipe 3 located above each filter bucket 2 is provided with multiple drainage holes.

[0025] It also includes an adsorption tank 5, the air inlet at the bottom of which is connected to the exhaust port of the desulfurization tank 1 through a pipeline. The adsorption tank 5 is provided with a first adsorption layer 6 and a second adsorption layer 7 from top to bottom.

[0026] In the above technical solution, the alkali liquid flows downward through the alkali liquid pipe 3, forming an alkali liquid curtain around each filter bucket, and the sulfur-containing natural gas enters the desulfurization tank 1 through the air inlet, moves from bottom to top, passes through the alkali liquid curtain of the lower filter bucket in turn, and then passes through the alkali liquid curtain of the upper filter bucket. That is to say, the natural gas is desulfurized by the reaction of alkali liquid and sulfide, and then further desulfurized by adsorbent, which can effectively remove sulfides in the natural gas and reduce the sulfur content.

[0027] According to an embodiment of the utility model, an air guide pipe 4 is vertically installed in the desulfurization tank 1, which is fixed at the bottom of the desulfurization tank 1. One end of the air guide pipe 4 is connected to the air inlet, and the other end is close to and does not contact the bottom filter bucket 2, and is located directly below the filter bucket 2. The diameter of the air guide pipe 4 is larger than the diameter of the air inlet of the desulfurization tank 1, which can reduce the flow rate of natural gas after entering the air guide pipe, thereby extending the contact time between the natural gas and the alkali liquid curtain, and extending the desulfurization reaction time as much as possible, and improving the desulfurization efficiency.

[0028] According to an embodiment of the present invention, the first adsorption layer 6 is a nano material adsorption layer, and the second adsorption layer 7 is filled with a metal organic framework adsorption layer.

[0029] In the above technical solutions, the use of new adsorbents (such as nanomaterials and metal organic frameworks) has a high recycling rate, which can reduce operating costs, reduce energy consumption, and reduce the impact of the desulfurization process on the environment. Both adsorption layers are modular and detachable, which is easy to install, maintain and overhaul.

[0030] According to an embodiment of the present utility model, the nano material adsorption layer is detachably mounted in the adsorption tank 5 , and the metal organic framework adsorption layer is detachably mounted in the adsorption tank 5 .

[0031] Both adsorption layers are modular and detachable, which is convenient for installation, maintenance and repair.

[0032] According to an embodiment of the present utility model, a filter is installed at the air inlet of the desulfurization tank 1 to filter and remove impurities in the natural gas.

[0033] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A natural gas desulfurization device, characterized in that: include: The desulfurization tank is hollow inside, and an air inlet is arranged at the bottom of the desulfurization tank, and an exhaust port is arranged at the top; A plurality of filter buckets are stacked up and down and arranged in the desulfurization tank at intervals, each of the filter buckets is small at the top and large at the bottom, and of two adjacent filter buckets, the filter bucket located at the top has a larger diameter and covers the filter bucket located at the bottom; A lye pipe, one end of which is connected to an external lye storage tank, and the other end of which penetrates from the top of the desulfurization tank and passes through the centers of all the filter buckets in sequence, and a portion of the lye pipe located above each filter bucket is provided with a plurality of drainage holes; It also includes an adsorption tank, the air inlet at the bottom of which is connected to the exhaust port of the desulfurization tank through a pipeline, and the adsorption tank is provided with a first adsorption layer and a second adsorption layer from top to bottom; The first adsorption layer is a nano material adsorption layer, and the second adsorption layer is filled with a metal organic framework adsorption layer.

2. The natural gas desulfurization device according to claim 1, characterized in that: An air guide pipe is vertically installed in the desulfurization tank and fixed at the bottom of the desulfurization tank. One end of the air guide pipe is connected to the air inlet, and the other end is close to but not in contact with the lowest filter bucket and is located directly below the filter bucket.

3. The natural gas desulfurization device according to claim 2, characterized in that: The diameter of the air guide pipe is greater than the diameter of the air inlet of the desulfurization tank.

4. The natural gas desulfurization device according to claim 1, characterized in that: The nano material adsorption layer is detachably mounted in the adsorption tank, and the metal organic framework adsorption layer is detachably mounted in the adsorption tank.

5. The natural gas desulfurization device according to claim 1, characterized in that: A filter is installed at the air inlet of the desulfurization tank.

Images