Fine desulfurization process switching device

Abstract

The utility model belongs to the technical field of water gas fine desulfurization processes, and particularly relates to a fine desulfurization process switching device which comprises a primary hydrolysis tank, the primary hydrolysis tank is connected with a primary fine desulfurization tank through a first pipeline, and the primary fine desulfurization tank is connected with a secondary hydrolysis tank through a second pipeline. The second-stage hydrolysis tank is connected with the second-stage fine desulfurization tank through a third pipeline, the second-stage fine desulfurization tank conveys desulfurized water gas to the storage tank through a fourth pipeline, the first pipeline is connected with a fifth pipeline, the fifth pipeline is connected with the third pipeline, the first pipeline is connected with a sixth pipeline, and the sixth pipeline is connected with the bottom of the second-stage hydrolysis tank. The second pipeline is connected with a fourth pipeline through a seventh pipeline, and the fourth pipeline is connected with the top of the second-stage hydrolysis tank through an eighth pipeline, so that the first-stage fine desulfurization tank and the second-stage fine desulfurization tank can be freely switched.

Description

Technical Field

[0001] The utility model belongs to the technical field of water gas fine desulfurization process, and specifically relates to a fine desulfurization process switching device. Background Art

[0002] Water gas fine desulfurization process technology: After the water gas is roughly desulfurized in the decarbonization tower, it passes through the primary hydrolysis tank to convert the COS in it into H2S. Then it enters two primary activated carbon fine desulfurization tanks in sequence to remove most of the trace sulfur. Then it enters the secondary hydrolysis tank to convert the remaining COS in the gas into H2S, and finally enters two secondary activated carbon fine desulfurization tanks in sequence to achieve the desulfurization effect of reducing the trace sulfur content in the water gas to below 10ppm.

[0003] This technical process has the following problems: first, in order to ensure the desulfurization effect, the secondary activated carbon fine desulfurization tank cannot reach the saturation state during use and needs to be replaced at a lower penetration. The utilization rate of the activated carbon fine desulfurization agent is low, resulting in a waste of activated carbon; second, all desulfurization tanks are put into use, there is no spare desulfurization tank, and the guarantee of process desulfurization is not strong.

[0004] Therefore, a fine desulfurization process switching device is needed. Utility Model Content

[0005] The utility model aims to provide a fine desulfurization process switching device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a fine desulfurization process switching device, including a primary hydrolysis tank, the primary hydrolysis tank is connected to the primary fine desulfurization tank through a first pipeline, the primary fine desulfurization tank is connected to the secondary hydrolysis tank through a second pipeline, the secondary hydrolysis tank is connected to the secondary fine desulfurization tank through a third pipeline, the secondary fine desulfurization tank transports the desulfurized water gas to the storage tank through a fourth pipeline, the first pipeline is connected to the fifth pipeline, the fifth pipeline is connected to the third pipeline, the first pipeline is connected to the sixth pipeline, the sixth pipeline is connected to the bottom of the secondary hydrolysis tank, the second pipeline is connected to the fourth pipeline through the seventh pipeline, and the fourth pipeline is connected to the top of the secondary hydrolysis tank through the eighth pipeline, so as to freely switch the primary fine desulfurization tank and the secondary fine desulfurization tank.

[0007] Specifically, the primary hydrolysis tank is provided with two hydrolysis tanks used in parallel.

[0008] Specifically, the first-stage fine desulfurization tank is provided with two fine desulfurization tanks used in series.

[0009] Specifically, the secondary fine desulfurization tank is provided with two fine desulfurization tanks used in series.

[0010] Specifically, valves are provided on the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline, the sixth pipeline, the seventh pipeline and the eighth pipeline.

[0011] The utility model has the following beneficial effects:

[0012] 1) By adding appropriate pipeline valves to the original process flow, the secondary fine desulfurization tank can be switched to the primary fine desulfurization tank after penetration, and the primary fine desulfurization tank can be switched to the secondary fine desulfurization tank after replacing new activated carbon; the desulfurization tank replaced with new activated carbon can also be temporarily used as a standby;

[0013] 2) The four fine desulfurizer tanks can be switched online;

[0014] 3) The utilization rate of the essence removal agent is greatly improved, and the service life of the essence removal agent is increased by two months. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] In the figure: 1-primary hydrolysis tank; 2-primary fine desulfurization tank; 3-secondary hydrolysis tank; 4-secondary fine desulfurization tank; 5-storage tank; 6-first pipeline; 7-second pipeline; 8-third pipeline; 9-fourth pipeline; 10-fifth pipeline; 11-sixth pipeline; 12-seventh pipeline; 13-eighth pipeline. DETAILED DESCRIPTION

[0017] The utility model will now be further described in detail with reference to the accompanying drawings.

[0018] like Figure 1 A fine desulfurization process switching device includes a primary hydrolysis tank 1, the primary hydrolysis tank 1 is connected to the primary fine desulfurization tank 2 through a first pipeline 6, the primary fine desulfurization tank 2 is connected to the secondary hydrolysis tank 3 through a second pipeline 7, the secondary hydrolysis tank 3 is connected to the secondary fine desulfurization tank 4 through a third pipeline 8, the secondary fine desulfurization tank 4 transports the desulfurized water gas to the storage tank 5 through a fourth pipeline 9, the first pipeline 6 is connected to the fifth pipeline 10, the fifth pipeline 10 is connected to the third pipeline 8, the first pipeline 6 is connected to the sixth pipeline 11, the sixth pipeline 11 is connected to the bottom of the secondary hydrolysis tank 3, the second pipeline 7 is connected to the fourth pipeline 9 through the seventh pipeline 12, and the fourth pipeline 9 is connected to the top of the secondary hydrolysis tank 3 through the eighth pipeline 13, so as to freely switch the primary fine desulfurization tank 2 and the secondary fine desulfurization tank 3.

[0019] The primary hydrolysis tank 1 is provided with two hydrolysis tanks used in parallel, the primary fine desulfurization tank 2 is provided with two fine desulfurization tanks used in series, the secondary fine desulfurization tank 4 is provided with two fine desulfurization tanks used in series, and valves are provided on the first pipeline 6, the second pipeline 7, the third pipeline 8, the fourth pipeline 9, the fifth pipeline 10, the sixth pipeline 11, the seventh pipeline 12 and the eighth pipeline 13.

[0020] By adding appropriate pipes and valves to the original process flow, the secondary fine desulfurization tank 4 can be switched to the primary fine desulfurization tank 2 after penetration, and the primary fine desulfurization tank 2 can be switched to the secondary fine desulfurization tank 4 after replacing new activated carbon, and the desulfurization tank replaced with new activated carbon can also be temporarily used as a standby.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine desulfurization process switching device, comprising a primary hydrolysis tank, wherein the primary hydrolysis tank is connected to a primary fine desulfurization tank through a first pipeline, the primary fine desulfurization tank is connected to a secondary hydrolysis tank through a second pipeline, the secondary hydrolysis tank is connected to a secondary fine desulfurization tank through a third pipeline, and the secondary fine desulfurization tank transports the desulfurized water gas to a storage tank through a fourth pipeline, characterized in that: The first pipeline is connected to the fifth pipeline, the fifth pipeline is connected to the third pipeline, the first pipeline is connected to the sixth pipeline, the sixth pipeline is connected to the bottom of the secondary hydrolysis tank, the second pipeline is connected to the fourth pipeline through the seventh pipeline, and the fourth pipeline is connected to the top of the secondary hydrolysis tank through the eighth pipeline, so as to freely switch between the first-level fine desulfurization tank and the second-level fine desulfurization tank.

2. A fine desulfurization process switching device according to claim 1, characterized in that: The primary hydrolysis tank is provided with two hydrolysis tanks used in parallel.

3. A fine desulfurization process switching device according to claim 1, characterized in that: The first-stage fine desulfurization tank is provided with two fine desulfurization tanks used in series.

4. A fine desulfurization process switching device according to claim 1, characterized in that: The secondary fine desulfurization tank is provided with two fine desulfurization tanks used in series.

5. A fine desulfurization process switching device according to claim 1, characterized in that: The first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline, the sixth pipeline, the seventh pipeline and the eighth pipeline are all provided with valves.

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